Complicated by Robin Thicke is in Gb at 120 beats per minute and runs 4:01 across 90 bars. It uses 17 chords — Bbm7, Ebm7, Ebm6, Eb7, Gb, Db, Dbmaj7, Db7, 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? Complicated guitar melody tab.