A formal band performing their works.
The band is playing music for an audience.
A band performing does not imply it is for an audience.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_perform(e1) & n_work(x3) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_band(x1) & a_formal(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_band(x1) & for(e1,x3) & n_audience(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_music(x2))