Peter Cetera was in a band.
`` Glory of Love '' is a 1986 song by Peter Cetera written and composed by Cetera , David Foster , and Cetera 's then-wife Diane Nini , and recorded by Cetera shortly after he left the band Chicago to pursue a solo career . Peter Cetera . `` Glory of Love , '' the theme song from the film , The Karate Kid Part II '' , was co-written by Cetera , David Foster and Diane Nini , and was nominated for both an Academy Award and a Golden Globe Award for best original song from a motion picture . Cetera was inducted into the Rock and Roll Hall of Fame as a member of Chicago in April 2016 , and Cetera , Robert Lamm , and James Pankow are among the 2017 Songwriters Hall of Fame inductees for their songwriting efforts as members of the group .