The music room contains the following instruments: Drums, Violin, Cello, Gong, Viola, Xylophone, Guitar, Ukelele and Piano. You need to put percussion on the left hand side and strings on the right. First, group the instruments into percussion and strings.

Violin, Cello, Viola, Guitar, Ukelele are string instruments. Piano, Xylophone, Drums, Gong are percussion instruments.