any style . any formation
Arrangements can be written literally in any style of music, for any ensemble size and in any degree of difficulty
Ensemble sizes: solo, duo, trio, quartet, quintet, sextet, septet, octet, nonet, tentet etc.
Ensemble type: brass section, orchestra (string-, symphony-, studio-), big band etc.
Music genres: jazz, pop, rock, afro-cuban, brazilian, east-european etc.