The standard from 1940 is analysed and shown to have the same A section "metabrick" as "Take the A Train" and "Bernie's Tune".

Using diminished-7 chords, Bartok substitution is introduced.

Bricks and concepts covered include: Cadence; Hover; On-Off; POT; Side-slipping; Multi-subbed POT; Nowhere Launcher; Launcher.

Joins include: Bootstrap; New Horizon; (Nowhere).