Instruct: Classify an Amazon review into positive or negative sentiment.
Query: essential

The material features french horn solos from two of the best in the business--Julius Watkins and David Amram. Fuller and Hawes must have been in the mood for something new and different here as co-leaders; french horns just weren't used much for soloing in jazz back then. The album, comprised of originals by David Amram, Teddy Charles and Salvatore Zito, features musically enlightened hard bop for the period. If you don't have it, grab it.Curtis Fuller (trombone)Sahib Shihab (alto sax)Julius Watkins (french horn)David Amram (french horn)Hampton Hawes (piano)Teddy Charles (piano)Addison Farmer (bass)Jerry Segal (drums)