"Do it again" is just like "Old shack" ... they same with the "rythm" Intro G#5 A5 C#5 G#5 A5 G#5 A5 F#5 A5 G#5 Verse D#5 Bb5 B5 G5 G#5 B5 E5 D#5 Chorus G#5 E5 A5
Source: http://www.guitaretab.com/f/five-times-august/148312.html