This arrangement is a great way to build your comfort with jazz-flavored chord voicings in B♭ — you've got ten chords here, and several of them (Dm7, Gm7, Fmaj7, C9) ask your left hand to hold extended shapes that'll stretch your fingers wider than basic triads.

At 80 BPM you have breathing room, so use it: the real challenge isn't speed but nailing smooth transitions, especially moving between B♭ and B♭m, where just one note drops a half step and your ear needs to feel that subtle shift into sadness.

I'd suggest learning the left-hand block bass pattern alone first, looping the verse until those chord changes feel automatic, then layering in the melody.

Watch the move from F7 to B♭ — that dominant pull is the emotional engine of the tune, so voice it cleanly.

If any transition feels sticky, isolate just those two chords and repeat ten times slowly before moving on.

This piece will genuinely solidify your seventh-chord vocabulary and make every jazz-influenced pop song after it feel more familiar under your hands.