Hippie jam band guitarist rocks out with keytar player in background.
There is music being played.
The band rocks out with a guitarist  and a keytar player.
exists x1 x2 x3 x4 x5 x6 x7 x8 x9.(a_topic(x1) & with(x6,x7) & in(x7,x9) & n_background(x9) & n_player(x7) & of(x7,x8) & n_keytar(x8) & out(x1,x6) & n_thing(x6) & n_rock(x1) & of(x1,x5) & n_guitarist(x5) & of(x1,x4) & n_band(x4) & of(x1,x3) & n_jam(x3) & (x1 = x2) & ne_nam_hippie(x2))
exists p1 x1 e1 x2 x3.((x1 = x2) & Theme(e1,x3) & v_play(e1) & (x2 = x3) & n_music(x2))