Losing My Mind by Stephen Sondheim is in Ab at 85 beats per minute and runs 2:38 across 33 bars. It uses 18 chords — Eb, Bbmaj7, Bb7, Eb+, Eb6, Eb11, Ab, Gm, and a few more. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? Losing My Mind guitar melody tab.