Let It Be by Labrinth is in Gb at 120 beats per minute and runs 1:48 across 50 bars. It uses 9 chords — Bbm, Gb, Ebm, Db, Ab, Bbm7, F7, F7sus4, 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? Let It Be guitar melody tab.