Moon River by Henry Mancini arranged for Clarinet Quartet by Gareth Brady. Comus Edition, 1956 (which must be the original copyright date), includes parts and score. A huge hit in its day and still a nice tune, this arrangement is for 3 B-flat clarinets and bass clarinet (with an alternate fourth part for B-flat clarinet). This alternate part is about 10-15 percent different than the bass part, but I don't know if it will work as a quintet. Easy high school level although it is in the key of E major. (C1596)