One Sweet Day by Mariah Carey and Boyz II Men is in Db at 72 beats per minute and runs 4:00 across 44 bars. It uses 14 chords — Ab, Dbmaj9, Gb, Bbm7, C7sus, C7, Fm, Dbmaj7, 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? One Sweet Day guitar melody tab.