Dog Days Are Over by Glee Cast is in G at 150 beats per minute and runs 2:30 across 72 bars. It uses 6 chords — G, Am, Em, N.C., F, C. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? Dog Days Are Over guitar melody tab.