American rock Building Sound and the polished production values of soul, have been seen as influencing the Merseybeat sound, particularly the early work of The Beatles, and through them and others the form of later rock music. Some historians of music have also pointed to important and innovative technical developments that built on rock and roll in this period, particularly the Wall of Sound pursued by Phil Spector. Commentators have traditionally perceived a decline of rock and roll in the late 1950s and early 1960s. By 1959, the death of Buddy Holly, The Big Bopper and Ritchie Valens in a plane crash,
1950s in music deaths of Buddy Holly, The Big Bopper and Ritchie Valens in a tragic plane crash in 1959 and the departure of Elvis for the army as causes. On the other side of the spectrum, R&B-influenced acts like The Crows, The Penguins, The El Dorados and The Turbans all scored major hits, and groups like The Platters, with songs including "The Great Pretender" (1955), and The Coasters with humorous songs like "Yakety Yak" (1958), ranked among the most successful rock and roll acts of the period. Rock and roll has also been seen as leading to a number of distinct subgenres,