Merry Christmas, Baby by Elvis Presley is in C at 99 beats per minute and runs 6:00 across 29 bars. It uses 6 chords — G7, C7, D7, G, C, Db7. 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? Merry Christmas, Baby guitar melody tab.