Wouldn't It Be Nice brass quintet

This song appeared on the Beach Boys' 1966 album "Pet Sounds," in which the group's main songwriter began so show a more elaborate musical style than the group's earlier surf music. The song mixes tempos and key signatures, and this arrangement passes melody chores around, sometimes quite rapidly.
Score and parts are available for a modest price at halleonard.com. Search on my name (Will Corbin) for the entire collection.