Most orchestras use the notes or existing arrangement of music for their musicians. But what about if the song is fairly new and there’s no available notes? The recourse for the band master is to make his own arrangement by taking into account the kind of instruments. Usually there are strings in an orchestra, wind instruments and also percussion. There is the so called mixing involved that the sounds produced by the instruments should be distinctly heard. Basically, the clarity of the instruments is the landmark of a good orchestra arrangement.