Mark all of the following that may be reasons why a composer would choose to orchestrate music in a specific manner. question 7 options: the composer chooses instruments depending on the group of performers.� (for instance, the composer would choose to assign musical lines differently for a string quartet than for an orchestra or jazz band.) the composer might like the sound of the trumpet better than the flute to represent an idea. the composer may wish to use certain instruments to support other instruments; as the bass and harmony support the melody. the composer usually randomly assigns instruments without care to the overall sound.