A young man is playing trumpet with a microphone in front of him, and next to him is another young man playing the baritone saxophone with another microphone in front of him.
Some of the instruments here are amplified via microphones.
Trumpets and baritone saxophones are instruments.  A microphone in front implies that the sound is being amplified via microphones.
exists e2 e1 p1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x10 x11.(n_saxophone(x10) & of(x10,x11) & n_baritone(x11) & exists e3 s3 x8 x9 x12 x13.((x1 = x8) & in(e3,x13) & of(x13,x1) & n_front(x13) & Theme(e3,x10) & Actor(e3,x9) & v_play(e3) & with(x10,x12) & n_microphone(x12) & -(x12 = x4) & (x8 = x9) & n_man(x8) & a_young(s3) & Theme(s3,x8) & -(x8 = x1)) & n_male(x1) & n_male(x1) & n_male(x1) & n_microphone(x4) & n_microphone(x4) & n_man(x1) & n_man(x1) & a_young(s2) & Theme(s2,x1) & to(e2,x1) & r_next(e2) & Theme(e2,x7) & Actor(e2,x6) & v_play(e2) & n_trumpet(x7) & (x1 = x6) & with(e1,x4) & in(x4,x5) & of(x5,x1) & n_front(x5) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_trumpet(x3) & (x1 = x2) & a_young(s1) & Theme(s1,x1))
exists s1 x1 x2 x3.(n_instrument(x2) & via(s1,x3) & n_microphone(x3) & Theme(s1,x1) & a_amplified(s1) & of(x1,x2) & r_here(x2) & n_thing(x1))