Lonely Days by Bee Gees is in Ab at 90 beats per minute and runs 2:05 across 24 bars. It uses 9 chords — Cm, Fm, Bb, Ebmaj7, Eb7, Ab, Bdim, C, and a few more. 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? Lonely Days guitar melody tab.