For the band, I would want flute because that's my instrument and its soo cool! violin for orchestra because the violin is so sweet and tiny and has a wonderful sound. both instruments could play Beethoven's 9th. they are important because with their little sound they carry a lot of notes that make the music kinda flow!
Style is considered less important because all different styles can still make someone feel a similiar way. Substance is more important because art is about how it makes a person feel