Lester William Polsfuss, known as Les Paul, was an American jazz, country, and blues guitarist, songwriter, luthier, and inventor. He was one of the pioneers of the solid-body electric guitar. Paul taught himself how to play guitar, and while he is mainly known for jazz and popular music, he had an early career in country music. He is credited with many recording innovations. Although he was not the first to use the technique, his early experiments with overdubbing (also known as sound on sound), delay effects such as tape delay, phasing effects and multitrack recording were among the first to attract widespread attention. The Gibson Les Paul, one of the world’s most popular electric guitars, was inspired by Paul’s “Log”.