Please choose the correct ending to complete the given sentence: Playing piano: A young man wearing a black tank top begins playing a piano. the young pianist

Ending1: then begins singing unenthusiastically. Ending2: pauses to play a song that is already sung. Ending3: begins to do small and solo moves in the piano and keeps adjusting the key. Ending4: performs a classical rendition.

Answer format: ending1/ending2/ending3/ending4