Friends by Justin Bieber feat. BloodPop is in Ab at 104 beats per minute and runs 3:05 across 44 bars. It uses 4 chords — Cm7, Bb, Ab, N.C.. 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? Friends guitar melody tab.