Haven't made a features list yet, but no you cannot because it does not yet have any concept of a "timeline". Here is the features list as it currently stands:

Implemented (in .zip in first post):

• Play a drum by hitting it
• 6 drums (crash cymbal, snare, bass drum and three toms)

In progress (I have done, but haven't yet uploaded):

• Recording/playback
• Quit button
• Metronome

Planned:

• Timeline
• Record over (multi-track recording)
• Adjustable Volume with tap intensity (it should be possible, we shall see)
• Timing correction (so two rapidly-played drums can be seen as simultaneous, getting around the lack of multitouch)
• Editing of created tracks
• Save and open
• Possibly other instruments?