diff --git a/drummachinesettings.cpp b/drummachinesettings.cpp
index 41fdbe8..9885173 100644
--- a/drummachinesettings.cpp
+++ b/drummachinesettings.cpp
@@ -232,3 +232,43 @@ void DrumMachineSettings::setLoopstationLastPresetId(const QString &lastPresetId
 {
     setValue("loopstation/lastPresetId", lastPresetId);
 }
+
+quint8 DrumMachineSettings::loopstationChannelPrevPreset() const
+{
+    return value("loopstation/prevPreset_channel", 99).toUInt();
+}
+
+void DrumMachineSettings::setLoopstationChannelPrevPreset(quint8 channel)
+{
+    setValue("loopstation/prevPreset_channel", channel);
+}
+
+quint8 DrumMachineSettings::loopstationNotePrevPreset() const
+{
+    return value("loopstation/prevPreset_note", 99).toUInt();
+}
+
+void DrumMachineSettings::setLoopstationNotePrevPreset(quint8 note)
+{
+    setValue("loopstation/prevPreset_note", note);
+}
+
+quint8 DrumMachineSettings::loopstationChannelNextPreset() const
+{
+    return value("loopstation/nextPreset_channel", 99).toUInt();
+}
+
+void DrumMachineSettings::setLoopstationChannelNextPreset(quint8 channel)
+{
+    setValue("loopstation/nextPreset_channel", channel);
+}
+
+quint8 DrumMachineSettings::loopstationNoteNextPreset() const
+{
+    return value("loopstation/nextPreset_note", 99).toUInt();
+}
+
+void DrumMachineSettings::setLoopstationNoteNextPreset(quint8 note)
+{
+    setValue("loopstation/nextPreset_note", note);
+}
diff --git a/drummachinesettings.h b/drummachinesettings.h
index 0ff8603..d1d7f89 100644
--- a/drummachinesettings.h
+++ b/drummachinesettings.h
@@ -71,4 +71,14 @@ public:
 
     QString loopstationLastPresetId() const;
     void setLoopstationLastPresetId(const QString &lastPresetId);
+
+    quint8 loopstationChannelPrevPreset() const;
+    void setLoopstationChannelPrevPreset(quint8 channel);
+    quint8 loopstationNotePrevPreset() const;
+    void setLoopstationNotePrevPreset(quint8 note);
+
+    quint8 loopstationChannelNextPreset() const;
+    void setLoopstationChannelNextPreset(quint8 channel);
+    quint8 loopstationNoteNextPreset() const;
+    void setLoopstationNoteNextPreset(quint8 note);
 };
diff --git a/drumpadpresets.cpp b/drumpadpresets.cpp
index d5208e6..2055c68 100755
--- a/drumpadpresets.cpp
+++ b/drumpadpresets.cpp
@@ -1,14 +1 @@
 #include "drumpadpresets.h"
-
-namespace drumpad_presets {
-
-bool File::operator==(const File &other) const
-{
-    return filename == other.filename &&
-           color == other.color &&
-           stopOnRelease == other.stopOnRelease &&
-           looped == other.looped &&
-           choke == other.choke;
-}
-
-} // namespace drumpad_presets
diff --git a/drumpadpresets.h b/drumpadpresets.h
index 095dd3d..07ca54b 100755
--- a/drumpadpresets.h
+++ b/drumpadpresets.h
@@ -28,8 +28,6 @@ struct File
     std::optional<QString> stopOnRelease;
     std::optional<bool> looped;
     std::optional<int> choke;
-
-    bool operator==(const File &other) const;
 };
 
 struct SequencePad
diff --git a/widgets/drumpadwidget.cpp b/widgets/drumpadwidget.cpp
index f5124a7..3e27360 100644
--- a/widgets/drumpadwidget.cpp
+++ b/widgets/drumpadwidget.cpp
@@ -179,15 +179,14 @@ void DrumPadWidget::requestFinished()
         return;
     }
 
-    auto reply = std::move(m_reply);
-    if (reply->error() != QNetworkReply::NoError)
-    {
-        QMessageBox::warning(this, tr("Could not load presets!"), tr("Could not load presets!") + "\n\n" + reply->errorString());
-        return;
-    }
+    m_ui->pushButtonRefresh->setEnabled(true);
 
+    auto reply = std::move(m_reply);
     try
     {
+        if (reply->error() != QNetworkReply::NoError)
+            throw std::runtime_error{QString{"request failed: %0"}.arg(reply->errorString()).toStdString()};
+
         auto result = json_converters::drumpad::parsePresetsConfig(json_converters::loadJson(reply->readAll()));
 
         if (!result.presets)
@@ -218,7 +217,7 @@ noLastId:
     }
     catch (const std::exception &e)
     {
-        QMessageBox::warning(this, tr("error"), tr("error") + "\n\n" + QString::fromStdString(e.what()));
+        QMessageBox::warning(this, tr("Could not load presets!"), tr("Could not load presets!") + "\n\n" + QString::fromStdString(e.what()));
     }
 }
 
diff --git a/widgets/drumpadwidget.ui b/widgets/drumpadwidget.ui
index e2dd06a..b318f3b 100644
--- a/widgets/drumpadwidget.ui
+++ b/widgets/drumpadwidget.ui
@@ -57,6 +57,9 @@
         </item>
         <item>
          <widget class="QPushButton" name="pushButtonRefresh">
+          <property name="enabled">
+           <bool>false</bool>
+          </property>
           <property name="maximumSize">
            <size>
             <width>32</width>
@@ -113,6 +116,11 @@
   </widget>
  </widget>
  <customwidgets>
+  <customwidget>
+   <class>MidiButton</class>
+   <extends>QPushButton</extends>
+   <header>widgets/midibutton.h</header>
+  </customwidget>
   <customwidget>
    <class>DrumPadSamplesWidget</class>
    <extends>QWidget</extends>
@@ -131,11 +139,6 @@
    <header>widgets/sequencerwidget.h</header>
    <container>1</container>
   </customwidget>
-  <customwidget>
-   <class>MidiButton</class>
-   <extends>QPushButton</extends>
-   <header>widgets/midibutton.h</header>
-  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>
diff --git a/widgets/loopstationwidget.cpp b/widgets/loopstationwidget.cpp
index a76e5c3..1815e29 100644
--- a/widgets/loopstationwidget.cpp
+++ b/widgets/loopstationwidget.cpp
@@ -56,21 +56,60 @@ void LoopStationWidget::injectDecodingThread(QThread &thread)
 void LoopStationWidget::loadSettings(DrumMachineSettings &settings)
 {
     m_settings = &settings;
+
+    m_ui->pushButtonUp->setChannel(m_settings->loopstationChannelPrevPreset());
+    m_ui->pushButtonUp->setNote(m_settings->loopstationNotePrevPreset());
+    m_ui->pushButtonDown->setChannel(m_settings->loopstationChannelNextPreset());
+    m_ui->pushButtonDown->setNote(m_settings->loopstationNoteNextPreset());
+
+    connect(m_ui->pushButtonUp, &MidiButton::channelChanged, m_settings, &DrumMachineSettings::setLoopstationChannelPrevPreset);
+    connect(m_ui->pushButtonUp, &MidiButton::noteChanged, m_settings, &DrumMachineSettings::setLoopstationNotePrevPreset);
+    connect(m_ui->pushButtonDown, &MidiButton::channelChanged, m_settings, &DrumMachineSettings::setLoopstationChannelNextPreset);
+    connect(m_ui->pushButtonDown, &MidiButton::noteChanged, m_settings, &DrumMachineSettings::setLoopstationNoteNextPreset);
 }
 
 void LoopStationWidget::unsendColors()
 {
-
+    emit sendMidi(midi::MidiMessage {
+        .channel = m_ui->pushButtonUp->channel(),
+        .cmd = midi::Command::NoteOn,
+        .flag = true,
+        .note = m_ui->pushButtonUp->note(),
+        .velocity = 0
+    });
+    emit sendMidi(midi::MidiMessage {
+        .channel = m_ui->pushButtonDown->channel(),
+        .cmd = midi::Command::NoteOn,
+        .flag = true,
+        .note = m_ui->pushButtonDown->note(),
+        .velocity = 0
+    });
 }
 
 void LoopStationWidget::sendColors()
 {
-
+    emit sendMidi(midi::MidiMessage {
+        .channel = m_ui->pushButtonUp->channel(),
+        .cmd = midi::Command::NoteOn,
+        .flag = true,
+        .note = m_ui->pushButtonUp->note(),
+        .velocity = 127
+    });
+    emit sendMidi(midi::MidiMessage {
+        .channel = m_ui->pushButtonDown->channel(),
+        .cmd = midi::Command::NoteOn,
+        .flag = true,
+        .note = m_ui->pushButtonDown->note(),
+        .velocity = 127
+    });
 }
 
 void LoopStationWidget::midiReceived(const midi::MidiMessage &message)
 {
-    Q_UNUSED(message);
+    m_ui->pushButtonUp->midiReceived(message);
+    m_ui->pushButtonDown->midiReceived(message);
+
+    // TODO
 }
 
 void LoopStationWidget::currentRowChanged(const QModelIndex &current)
@@ -120,15 +159,14 @@ void LoopStationWidget::requestFinished()
         return;
     }
 
-    auto reply = std::move(m_reply);
-    if (reply->error() != QNetworkReply::NoError)
-    {
-        QMessageBox::warning(this, tr("Could not load presets!"), tr("Could not load presets!") + "\n\n" + reply->errorString());
-        return;
-    }
+    m_ui->pushButtonRefresh->setEnabled(true);
 
+    auto reply = std::move(m_reply);
     try
     {
+        if (reply->error() != QNetworkReply::NoError)
+            throw std::runtime_error{QString{"request failed: %0"}.arg(reply->errorString()).toStdString()};
+
         auto result = json_converters::loopstation::parsePresetsConfig(json_converters::loadJson(reply->readAll()));
 
         if (!result.presets)
@@ -159,23 +197,48 @@ noLastId:
     }
     catch (const std::exception &e)
     {
-        QMessageBox::warning(this, tr("error"), tr("error") + "\n\n" + QString::fromStdString(e.what()));
+        QMessageBox::warning(this, tr("Could not load presets!"), tr("Could not load presets!") + "\n\n" + QString::fromStdString(e.what()));
     }
 }
 
 void LoopStationWidget::selectFirstPreset()
 {
+    if (!m_presetsProxyModel.rowCount())
+        return;
 
+    selectIndex(m_presetsProxyModel.index(0, 0));
 }
 
 void LoopStationWidget::selectPrevPreset()
 {
+    if (!m_presetsProxyModel.rowCount())
+        return;
 
+    const auto index = m_ui->presetsView->selectionModel()->currentIndex();
+    if (!index.isValid())
+    {
+        qWarning() << "invalid index";
+        return;
+    }
+
+    if (index.row() > 0)
+        selectIndex(m_presetsProxyModel.index(index.row() - 1, 0));
 }
 
 void LoopStationWidget::selectNextPreset()
 {
+    if (!m_presetsProxyModel.rowCount())
+        return;
 
+    const auto index = m_ui->presetsView->selectionModel()->currentIndex();
+    if (!index.isValid())
+    {
+        qWarning() << "invalid index";
+        return;
+    }
+
+    if (index.row() + 1 < m_presetsProxyModel.rowCount())
+        selectIndex(m_presetsProxyModel.index(index.row() + 1, 0));
 }
 
 void LoopStationWidget::selectIndex(const QModelIndex &index)
diff --git a/widgets/loopstationwidget.ui b/widgets/loopstationwidget.ui
index c8704bd..929dd1a 100644
--- a/widgets/loopstationwidget.ui
+++ b/widgets/loopstationwidget.ui
@@ -51,7 +51,10 @@
        </widget>
       </item>
       <item>
-       <widget class="MidiButton" name="pushButtonRefresh">
+       <widget class="QPushButton" name="pushButtonRefresh">
+        <property name="enabled">
+         <bool>false</bool>
+        </property>
         <property name="maximumSize">
          <size>
           <width>32</width>