Hi! Sorry if this is already been discussed, but in venture through the search options the closest i got was "theyre listed in the front cover" which wasnt entirely helpful! Anyway! Were looking at buying a set of four of these books for tuba trombone and two trumpet players - which books would make sure we could cover all four satb parts? Also the same question would apply for the Philip Sparke arrangements if anyone knows? I was looking at these as theyre much cheaper although having less material. Any thoughts?