This score (which is ring bound on A4) shows parts 1 & 2 in Bb, part 3 in Eb and part 4 in bass clef concert pitch, plus the percussion parts (drum kit & auxiliary).
Alternatively, the wind band score (CMT1548) shows all the parts in concert pitch.
The 11 pieces in this very popular set are in 4 parts + percussion. Parts 5a, 5b & 5c for tubas give a greater depth to the overall sound but are optional.