* Compose vocal harmonies: Working with the lead singer and other vocalists, the arranger creates backing vocals that complement and enhance the lead melody. This can involve writing new melodies, as well as adapting and arranging existing material.
* Assign vocal parts: The arranger determines which vocalists will sing which parts, taking into consideration their individual strengths and ranges.
* Create vocal charts: The arranger creates sheet music that shows the vocal parts for each singer. This includes the lyrics, melodies, and any special instructions or notes.
* Direct vocal rehearsals: The arranger leads vocal rehearsals, teaching the singers their parts and helping them to interpret the music.
* Mix and balance vocals: The arranger works with the sound engineer to mix and balance the vocal levels so that they sound clear and cohesive in the final mix.
* Write backing tracks: In some cases, the arranger may also write backing tracks for the vocalists to sing along to. These tracks can include instrumental accompaniments, as well as click tracks and other timing references.
In short, vocal arrangers play a vital role in creating and shaping the vocal sound of a musical production. Their work is essential to achieving the perfect blend of harmonies and melodies, and to ensuring that the vocalists are able to perform at their best.