Answer
Albert King, B.B. King, and Freddie King, known as the "Kings of the Blues," were influential guitarists and singers who shaped the genre in the mid-20th century. Albert King was known for his stinging guitar solos and powerful vocals, while B.B. King's smooth, soulful style earned him the nickname "King of the Blues." Freddie King, with his energetic stage presence and distinctive vibrato, further contributed to the blues' evolution.