Advanced Gtk+ Sequencer - screencast v2.0.18
Joël Krähemann shows basic usage of GSequencer. He uses AgsPanel, AgsMixer, AgsDrum, AgsSyncsynth, AgsDssiBridge and AgsLv2Bridge during this screencast.
The first mentioned machines are built-in. Whereas the DSSI and LV2 bridge are provided by an extern plugin.
AgsDssiBridge is provided by XSynth-DSSI.
AgsLv2Bridge is provided by Monosynth of Calf Studio Plugins.