Telephone by Lady Gaga featuring Beyonce is in Db at 122 beats per minute and runs 3:40 across 100 bars. It uses 4 chords — Fm, Ab, Bb, 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? Telephone guitar melody tab.