Classical guitar There are significant works by composers such as Hans Werner Henze of Germany, Gilbert Biberian of England and Roland Chadwick of Australia. The classical guitar also became widely used in popular music and rock & roll in the 1960s after guitarist Mason Williams popularized the instrument in his instrumental hit Classical Gas. Guitarist Christopher Parkening is quoted in the book "Classical Gas: The Music of Mason Williams" as saying that it is the most requested guitar piece besides Malagueña and perhaps the best known instrumental guitar piece today. In the field of New Flamenco, the works and performances of Spanish
Classical guitar technique is known as a trill. Because the note is being plucked repeatedly it is possible to continue a trill indefinitely. Occasionally, the upper note in such a trill is played by alternating fingers thus: 2-1-3-1-, etc. The classical guitar vibrato is executed by rocking the tip of the left-hand finger(s) back and forth horizontally within the same fret space (i.e. along the string axis, and not across it as for a vertical "bend" in rock or blues music) producing a subtle variation in pitch, both sharper and flatter than the starting note, without noticeably altering the fundamental tonal focus of