How Long in G.

You need to play G/A (G bar chord with base A held) then A chord.

G/A. A. G/A. A. G/A. A. G/A. A. G/A. A. G/A. A. G/A. A. G/A. A Bbm

Bm (x24432@1)   F#m (244222@1)       Em (022000@1)       EmGbm  Bm (x24432@1)   F#m (244222@1)       Em (022000@1)       EmGbm 
How long has this been going on      How long has this been going on

Into Lead Then Repeat.