Ardour is a digital audio workstation. You can use it to record, edit and mix
multi-track audio and MIDI. You can produce your own CDs, mix video sound
tracks, or just experiment with new ideas about music and sound.

Ardour capabilities include: multi channel recording, non-destructive editing
with unlimited undo/redo, full automation support, LV2 and Linux VST plugins
support, a powerful mixer, unlimited tracks/buses/plugins, time-code
synchronization, and hardware control from surfaces like the
Mackie Control Universal.