Let It Go by James Bay is in Gb at 75 beats per minute and runs 3:28 across 49 bars. It uses 9 chords — Db, Gb, Bbm, Ab, Gm7, Gbmaj7, Ebm7, Fm, 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 Go guitar melody tab.