From Born to Dance ... 1936 ... original title of the movie was Great Guns. Has one of my favorite verses (so many I love from Cole Porter though):

When ev'ry meal you take

Is made of milk and honey,

When ev'ry stock you stake

Is making mints of money,

When ev'ry heart you break

Is such a cinch, it's funny,

Careful, sonny,

Rap-tap, rap-tap, rap-tap-tap, rap-a-tap-tap....

Ra-ap tap on wood

Other songs in the musical that I enjoy include Love Me, Love My Pekingese ("'Spite of your antipathies") and I've Got You Under My Skin (best version done by old Blue Eyes many years later).