help/explanations please
12a second-rate rhytm half-twisted 4 ?E?A
14a french pedagogue's rage after british conductor misses time 9 ????A?G?R
15a robert schumann initially accepted first of musical flops 5 B?M?S bumps????
22a conductor to prevent the german throttling Pole 10 ?A?D?A?T?R
28a english soldier carrying support for piano with great style 7 ??????T sargent?
thanks