American blues singer, electric guitarist, songwriter, and record producer B.B. King introduced a sophisticated style of soloing based on fluid string bending and shimmering vibrato that influenced many later electric blues guitarists. Inducted into the Rock and Roll Hall of Fame in 1987, King is considered one of the most influential blues musicians of all time, earning the nickname "The King of the Blues", and one of the "Three Kings of the Blues Guitar" along with Albert King and Freddie King.  Known for performing tirelessly throughout his musical career, appearing at more than 200 concerts per year on average into his 70s, he toured with the American rock band J. Geils Band formed in 1968 under the leadership of guitarist John "J." Geils. The band played R&B-influenced blues rock during the 1970s and soon achieved commercial success before moving towards a more mainstream radio-friendly sound in the early 1980s, which brought the band to its commercial peak.