[1] The song has been covered by Sonny & Cher, Diana Ross, Andy Williams, Lena Horne, Patti Austin, and Goldfinger.
[3] He and his brother, Don, had a gospel quartet in high school and won some talent contests, including the state FFA competitions.
[3][4] On one Sunday, Upton skipped church to go to a local restaurant for breakfast, where he found one of his friends playing Duane Eddy on a jukebox; he had just bought his first electric guitar.
Upton wrote their biggest single, "More Today Than Yesterday", in a motel in Las Vegas and originally thought it would be a good song for Bobby Goldsboro to sing.
[3] After Spiral Starecase disbanded in 1971, Upton relocated to Los Angeles, where he worked as a session musician and then a band member for Ricky Nelson.