The crossword solution for the term DIAMOND OR YOUNG is NEIL. Neil Diamond is an American singer-songwriter and musician who has been active since the 1960s. He is known for his distinctive vocal style and his many hits, including 'Sweet Caroline' and 'America'. Neil Young is a Canadian singer-songwriter and musician who has been active since the 1960s. He is known for his folk-rock sound and his many hits, including 'Heart of Gold' and 'Old Man'.