This arrangement is a great way to build your comfort in the key of B♭, where your left hand will regularly land on chord shapes like B♭, Gm, E♭, and F — all of which use flats your fingers need to find without hesitation.

At 85 BPM the tempo is gentle, but the real challenge is keeping your right-hand melody smooth and connected while your left hand moves through some quick chord changes, especially the chromatic walk-down passages where harmonies shift every two beats.

Start hands-separate: get the left-hand chord sequence memorized first so you're not thinking about it when you add the melody.

Once you combine hands, loop the bridge section at half speed — that's where most students stumble because the rhythm sits slightly off the beat and the chord movement is denser.

Use light sustain pedal, lifting cleanly on each chord change to avoid mud.

If you can play through those bridge transitions cleanly, you'll have real confidence moving between minor and major shapes in flat keys, and that's a skill that transfers to dozens of songs.