I would watch a musician at a concert play an instrumental song on a musical instrument app like a drum or guitar app being played on a tablet. Other musicians use record players/turntables, laptop computers, trash and oil cans as drums and other non-traditional instruments to DJ and play music, so using a non-traditional musical instrument like a tablet maybe entertaining to watch if the song is well played, and the musician also dances and sings while playing a song on a tablet.
Examples of people playing musical instrument apps on tablets.
