Angus would be able to play both the bass and treble staff notes on the piano---William Tell Overture---and sing his favorite song:
to-the-park-to-the-park-to-the-park-park-park
to-the-place-where-we-go-and-we-bark-bark-bark
makes-us-happy-as-a-lark-lark-lark
to-the-paaaaaaaaark
to-the-park-park-park
*BG*