'musi pi kulupu Watijo-lawa' (the music of the group) or 'kulupu musi Watijo-lawa' (the band or whatever).
You can't olin an insentient object so, not the music and possibly not the band, though maybe the members of the band. Unless you are planning on an affair (bad plan at your age), better stick with 'x li pona tawa mi'.
Last edited by janKipo
on Fri Oct 30, 2015 5:13 pm, edited 1 time in total.