16 across Gyrate acrobatically to hip-hop (5-5) B?E?K ?M?C?
21 across Walkin speed G?C? I think I must have something wrong. I have magnifier for 17 down which gives me the M and the G.
17 down Lens to enlarge the field of vision (9)
If I put in Break Dance as suggested I have A???I?I?R I thought it was going to be magnifier.
22d Praise (7) ??M?E?D I have commend
21ac Walking speed (4) ??C? is it pace?
Thank you Mutt 53. Amplifier does fit with all the other clues but I didnt think it was "lens to enlarge vision" I thought it enlarged volume. I will put it though because I am fed up trying to solve it.