 It was this video performance that impressed Giant Records chief Irving Azoff enough to sign Shepherd to a multiple album record deal.From 1995 on, Shepherd took seven singles into the Top 10, and holds the record for the longest-running album on the "Billboard" Blues Charts with "Trouble Is...".In 1996, Shepherd began a longtime collaboration with vocalist Noah Hunt, who provided the vocals for Shepherd's signature song, "Blue on Black".