diff --git a/meson.build b/meson.build
index c24b07f..c02b43c 100644
--- a/meson.build
+++ b/meson.build
@@ -11,6 +11,7 @@ alsa_dep = dependency('alsa')
 
 executable(
   'hyperpop',
+  './src/player/SongLibrary.cpp',
   './src/player/OpusFile.cpp',
   './src/player/ALSAOutput.cpp',
   './src/player/Player.cpp',
diff --git a/src/main.cpp b/src/main.cpp
index a71b582..19fd427 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,12 +5,16 @@
 #include "raven/Widget.hpp"
 #include "raven/Button.hpp"
 #include "src/player/Player.hpp"
+#include "src/player/SongLibrary.hpp"
 #include "ui/AppWidget.hpp"
 #include "player/ALSAOutput.hpp"
 #include "player/OpusFile.hpp"
 
 int main()
 {
+    SongLibrary *library = new SongLibrary();
+    library->populate_from("/home/hippoz/music");
+
     Player player;
 
     Raven::Application application(true);
@@ -18,7 +22,11 @@ int main()
 
     window->spawn_window();
 
-    window->set_main_widget<AppWidget>(&player);
+    window->set_main_widget<AppWidget>(&player, library);
 
-    return application.run();
+    application.run();
+
+    delete library;
+
+    return 0;
 }
diff --git a/src/player/SongLibrary.cpp b/src/player/SongLibrary.cpp
new file mode 100644
index 0000000..ced06bc
--- /dev/null
+++ b/src/player/SongLibrary.cpp
@@ -0,0 +1,41 @@
+#include "SongLibrary.hpp"
+#include <opusfile.h>
+#include <iostream>
+#include <memory>
+
+
+void SongLibrary::populate_from(std::filesystem::path directory) {
+    m_all_songs.clear();
+    m_songs_by_artist.clear();
+
+    for (const auto &entry : std::filesystem::directory_iterator(directory)) {
+        OggOpusFile *file = op_open_file(entry.path().c_str(), NULL);
+        if (file == NULL) {
+            continue;
+        }
+        const OpusTags *tags = op_tags(file, -1);
+        if (tags == NULL) {
+            continue;
+        }
+
+        const char *artist_value = opus_tags_query(tags, "artist", 0);
+        const char *title_value = opus_tags_query(tags, "title", 0);
+        const char *album_value = opus_tags_query(tags, "album", 0);
+        if (artist_value == NULL || title_value == NULL || album_value == NULL) {
+            continue;
+        }
+
+        std::shared_ptr<SongEntry> song_entry = std::make_shared<SongEntry>();
+        song_entry->artist = artist_value;
+        song_entry->title = title_value;
+        song_entry->album = album_value;
+        song_entry->absolute_path = entry.path().c_str();
+        song_entry->length_ms = op_pcm_total(file, -1);
+
+        m_all_songs.push_back(song_entry);
+        m_songs_by_artist[song_entry->artist].push_back(song_entry);
+
+        op_free(file);
+    }
+}
+
diff --git a/src/player/SongLibrary.hpp b/src/player/SongLibrary.hpp
new file mode 100644
index 0000000..f0131ac
--- /dev/null
+++ b/src/player/SongLibrary.hpp
@@ -0,0 +1,28 @@
+#pragma once
+#include <string>
+#include <vector>
+#include <map>
+#include <filesystem>
+
+
+class SongLibrary {
+public:
+    struct SongEntry {
+        std::string artist;
+        std::string album;
+        std::string title;
+        std::string absolute_path;
+        size_t length_ms;
+    };
+
+    SongLibrary() {}
+
+    void populate_from(std::filesystem::path directory);
+
+    const std::vector<std::shared_ptr<SongEntry>> &all_songs() { return m_all_songs; }
+    const std::map<std::string, std::vector<std::shared_ptr<SongEntry>>> &songs_by_artist() { return m_songs_by_artist; }
+private:
+    std::vector<std::shared_ptr<SongEntry>> m_all_songs;
+    std::map<std::string, std::vector<std::shared_ptr<SongEntry>>> m_songs_by_artist;
+};
+
diff --git a/src/ui/AppWidget.cpp b/src/ui/AppWidget.cpp
index 2617214..9e4403d 100644
--- a/src/ui/AppWidget.cpp
+++ b/src/ui/AppWidget.cpp
@@ -1,4 +1,5 @@
 #include "AppWidget.hpp"
+#include "GenericStyle.hpp"
 #include "raven/Styles.hpp"
 #include "raven/Box.hpp"
 #include "raven/TextInput.hpp"
@@ -11,17 +12,65 @@
 #include "raven/DocumentLayout.hpp"
 #include "src/player/OpusFile.hpp"
 #include "src/player/Player.hpp"
+#include "src/player/SongLibrary.hpp"
 #include <filesystem>
 
-static void populate_song_list(std::filesystem::path songs_directory, std::shared_ptr<Raven::Widget> song_list_widget, Player *player) {
+Raven::RGB accent_color = { 0xF7A99E };
+Raven::RGB background_color = { 0xfff9f4 };
+
+Raven::GenericStyle background_color_style {
+    NULL,
+    Raven::unused,
+    accent_color,
+    Raven::unused,
+    Raven::unused,
+    0.0,
+    true,
+    false
+};
+
+Raven::GenericStyle main_view_style {
+    NULL,
+    Raven::unused,
+    background_color,
+    Raven::unused,
+    Raven::unused,
+    12.0,
+    true,
+    false
+};
+
+Raven::GenericStyle song_button_style {
+    pango_font_description_from_string("sans-serif"),
+    Raven::black1,
+    background_color,
+    accent_color.factor(1.1),
+    accent_color.factor(1.2),
+    6.0,
+    true,
+    true
+};
+
+Raven::GenericStyle artist_button_style {
+    pango_font_description_from_string("sans-serif"),
+    Raven::black1,
+    accent_color,
+    accent_color.factor(1.1),
+    accent_color.factor(1.2),
+    6.0,
+    true,
+    true
+};
+
+static void populate_song_list(std::shared_ptr<Raven::Widget> song_list_widget, Player *player, SongLibrary *song_library, std::string target_artist) {
     song_list_widget->clear_children();
-    for (const auto &entry : std::filesystem::directory_iterator(songs_directory)) {
-        std::string filename = entry.path().filename();
-        std::string path_string = entry.path().string();
-        auto button = song_list_widget->add<Raven::Button>(filename);
-        button->on_click = [player, path_string]() {
+
+    for (const auto &entry : song_library->songs_by_artist().at(target_artist)) {
+        auto button = song_list_widget->add<Raven::Button>(entry->title);
+        button->set_style(&song_button_style);
+        button->on_click = [player, entry]() {
             auto file = std::make_shared<OpusFile>();
-            file->open(path_string);
+            file->open(entry->absolute_path);
             player->set_file(file);
         };
     }
@@ -30,23 +79,47 @@ static void populate_song_list(std::filesystem::path songs_directory, std::share
 void AppWidget::on_init() {
     /* init */
     {
-        auto layout = set_layout<Raven::BoxLayout>(Raven::Direction::Vertical);
+        auto layout = set_layout<Raven::BoxLayout>(Raven::Direction::Horizontal);
         layout->set_spacing(8);
-        layout->set_margin(12);
+        layout->set_margin(16);
+
+        set_style(&background_color_style);
+    }
+    
+    /* sidebar */
+    {
+        m_sidebar = add<Raven::ScrollContainer>();
+        m_sidebar->set_style(&background_color_style);
+        m_sidebar->rect().set_min_width(250.0);
+        auto target = m_sidebar->make_target();
+        target->set_style(&background_color_style);
+        auto layout = target->set_layout<Raven::ListLayout>(Raven::Direction::Vertical);
+        layout->set_spacing(6.0);
+        layout->set_inherit_secondary_dimension(true);
     }
 
     /* song list */
     {
         m_song_list = add<Raven::ScrollContainer>();
         m_song_list->set_grows(true);
+        m_song_list->set_style(&main_view_style);
         auto target = m_song_list->make_target();
         auto layout = target->set_layout<Raven::ListLayout>(Raven::Direction::Vertical);
-        layout->set_spacing(4.0);
+        layout->set_spacing(6.0);
+        layout->set_margin(10.0);
         layout->set_inherit_secondary_dimension(true);
     }
 
-    populate_song_list("/home/hippoz/music", m_song_list->target(), m_player);
+    populate_song_list(m_song_list->target(), m_player, m_song_library, "EDEN");
+    for (const auto &it : m_song_library->songs_by_artist()) {
+        auto button = m_sidebar->target()->add<Raven::Button>(it.first);
+        button->set_style(&artist_button_style);
+        button->on_click = [this, it]() {
+            populate_song_list(m_song_list->target(), m_player, m_song_library, it.first);
+        };
+    }
 
     reflow();
     set_did_init(true);
-}
\ No newline at end of file
+}
+
diff --git a/src/ui/AppWidget.hpp b/src/ui/AppWidget.hpp
index eeeb689..3174402 100644
--- a/src/ui/AppWidget.hpp
+++ b/src/ui/AppWidget.hpp
@@ -4,16 +4,20 @@
 #include "raven/Widget.hpp"
 #include "raven/TextInput.hpp"
 #include "src/player/Player.hpp"
+#include "src/player/SongLibrary.hpp"
 
 class AppWidget : public Raven::Widget {
 public:
-    AppWidget(Player *player)
+    AppWidget(Player *player, SongLibrary *library)
         : Raven::Widget()
-        , m_player(player) {}
+        , m_player(player)
+        , m_song_library(library) {}
 
 protected:
     void on_init() override;
 private:
     std::shared_ptr<Raven::ScrollContainer> m_song_list;
+    std::shared_ptr<Raven::ScrollContainer> m_sidebar;
     Player *m_player;
+    SongLibrary *m_song_library;
 };