The crossword solution for the term PRINCE, ONCE is FROG. Prince, ONCE known as Prince Rogers Nelson, was an American singer, songwriter, musician, record producer, and actor. He was a musical innovator who was known for his eclectic work, flamboyant stage presence, extravagant dress and makeup, and wide vocal range. He released 39 studio albums during his career, and was inducted into the Rock and Roll Hall of Fame in 2004. He was also known for his 1984 film Purple Rain, which won an Academy Award for Best Original Song Score. Prince's most famous song, 'KISS', was released in 1986 and became a worldwide hit.