I Just Can’t Help Believin’ by Elvis Presley is in Bb at 100 beats per minute and runs 3:14 across 26 bars. It uses 11 chords — F5, F, Fmaj7, Gm, Gm7, Cm, Bb, Bbm, 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? I Just Can’t Help Believin’ guitar melody tab.