There are also some artists who have made vocoders an essential part of their music, overall or during an extended phase. Examples include the German synthpop group Kraftwerk, the Japanese new wave group Polysics, Stevie Wonder ("Send One Your Love", "A Seed's a Star") and jazz/fusion keyboardist Herbie Hancock during his late 1970s period. In 1982 Neil Young used a Sennheiser Vocoder VSM201 on six of the nine tracks on Trans.[35] Perhaps the most heard, yet often unrecognized, example of the use of a vocoder in popular music, is on Michael Jackson's 1982 album Thriller, in the song "P.Y.T.