I Don't Know Why (I Just Do): SATB Choral Octavo

Dave Riley's arrangement captures everything that makes jazz standards teachable at the secondary level: sophisticated but accessible voicing, natural phrasing that sits well in the voice, and rhythmic energy that engages singers without overwhelming them. The inclusion of an opening solo moment gives every singer a chance to shine, and the jazz harmonies expose choirs to harmonic language they won't encounter in most school repertoire.

There's a gentle swing and sophistication here that feels grown-up without being precious. The lyrical melody carries easily over the jazzy underpinning, creating a song that feels conversational and warm, like someone sharing a genuine moment rather than performing for an audience.

This piece suits choirs in Grades 7-12 who have developed basic blend and can handle four-part writing with jazz harmony. It works equally well for community choirs and school show choirs seeking accessible but musically substantive standards.

• Balance the jazz harmonies by thinking vertically. Have singers sustain chord tones and listen inward to the harmonies they're creating, especially in passages with chromaticism or seventh chords.
• Shape the solo opening with warmth and intimacy, regardless of which voice takes it. This sets the conversational, intimate tone that standards demand before the full choir enters.
• Keep the tempo steady and swung rather than metrically rigid. The pulse should feel natural and speaking, not mechanical.
• Layer the accompaniment dynamically during rehearsals. Start without recorded accompaniment to build solid inner-part independence, then add the SoundTrax to reinforce groove and timing.

Program this as a lighter moment in a concert of standards, or as part of a jazz-focused set that might include other Riley arrangements. Its 8-page length makes it practical for a concert that includes both classical and contemporary music, and the optional solo feature allows you to spotlight a soloist before bringing the full choir in.

• Singing jazz harmonies and seventh chords
• Voice leading in close harmony
• Understanding swing rhythm and phrasing
• Ensemble balance and listening to chord function