A trio of men performing music.
Music by a trio men
Music created by someone does not necessarily imply the same person is performing it.
exists e1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_perform(e1) & n_music(x4) & (x2 = x3) & n_man(x2) & n_trio(x1))
exists s1 x1 x2.(ne_nam_music(s1) & a_topic(s1) & by(s1,x1) & n_man(x1) & of(x1,x2) & n_trio(x2))