"New lyrics" refers to fresh or original words that are written for a song, instead of using the same lyrics that have been used before. Full definition
They were familiar with this kind of activity because I had taught another lesson on using familiar tunes and writing new lyrics earlier in the year. (inservice.ascd.org)
As I explored the beauty in our parks, I invented new lyrics for these songs. (parksconservancy.org)
Named after the patron saint of music, the installation features two single channel video projections with footage of the Baltimore Choral Arts Society singing three traditional Christmas carols with new lyrics written by Grigely to convey what he calls «lip misreading» — identical lip formations that produce dissimilar sounds. (dailyserving.com)