Start by learning to hear and navigate the II7 dominant chord, which replaces the expected minor ii sound in But Not For Me. Instead of treating it as something unfamiliar, begin to hear it as the V7 of V7, part of a chain of dominant motion that pushes the harmony forward. Once you understand how it works, and can really hear it, the progression starts to feel logical.

Next, focus on shaping melodic lines that flow naturally through the harmony. Studying players like Chet Baker will show you how to prioritize melody, use longer phrases, and clear direction to make the tune sound musical rather than mechanical.

Finally, work on hearing the movement from II7 dominant chords into ii minor chords, a relationship that shows up in this tune and throughout the repertoire. Instead of seeing these as separate events, start hearing them as connected motion with a clear sense of direction. This will help you build lines that reflect how the progression actually moves.