Question: What founder of ABKCO Music & Records Incorporated had legal fights with the Rolling Stones?
Sentence (from "Allen Klein"): Allen Klein (December 18, 1931 July 4, 2009) was an American businessman, music publisher, writers' representative, filmmaker and record label executive, most noted for his tough persona and aggressive, innovative negotiation tactics, many of which established higher industry standards for compensating recording artists.
Relevant evidence: No