Given the question: The Philosopher's Stone is a compilation album by Northern Irish singer-songwriter Van Morrison released in 1998 (see 1998 in music).The songs released on this 2-CD thirty track album were previously unreleased outtakes from 1969 to 1988. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
The answer is:
Album