In New York, Silver and Blakey co-founded the Jazz Messengers, a cooperatively-run group that initially recorded under various leaders and names. Their first two studio recordings, with Hank Mobley on tenor saxophone, Kenny Dorham on trumpet, and Doug Watkins on bass, were made in late 1954 and early 1955 and were released as two 10-inch albums under Silver's name, then soon thereafter as the 12-inch "Horace Silver and the Jazz Messengers". This album contained Silver's first hit, "The Preacher". Unusually in Silver's career, recordings of concert performances were also released at this time, involving quintets at Birdland (1954) and the Café Bohemia (1955). This set of studio and concert recordings was pivotal in the development and defining of hard bop, which combined elements of blues, gospel, and R&B, with bebop-based harmony and rhythm. The new, funky hard bop was commercially popular, and helped to establish Blue Note as a successful business.