Madcat's music has been evolving for over 60 years. It started in the Chicago area in the early 1960s, with Madcat playing folk/blues on guitar and harmonica. By the late 1960s, he had immersed himself in the Chicago Blues and was studying harmonica with Big Walter Horton. In the early 1970s, Madcat moved to Ann Arbor, Michigan where he was a key presence in two of Ann Arbor's finest progressive rock bands: New Heavenly Blue and Sky King. By the mid 1970s, Madcat was touring the world with jazz pianist Dave Brubeck. In the 1980s, Madcat went solo infusing the folk/blues tradition with elements of rock and jazz. In 1990, Madcat teamed up with guitarist/singer Shari Kane to form the duo Madcat & Kane. For twenty-four years they toured nationally and internationally. And in 1998 Madcat teamed up with Chris Brubeck to form Triple Play and also started performing with Big Joe Manfra in Brazil. Madcat currently fronts Peter Madcat Ruth’s C.A.R.Ma. Quartet.

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       Madcat's experience is extensive. He has been an invited guest performer at many harmonica festivals in North America, South America, Europe, and Asia. His harmonica playing is heard on over 130 CDs and LPs. National television and radio appearances, symphony orchestra performances, radio and television advertisements, and harmonica workshops all attest to Madcat's reputation as one of the best and most versatile harmonica players in the world.

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     Madcat is more than an expert musician. He is also a performer who has such a good time playing music that audiences, ranging from pre-schoolers to senior citizens, delight in his performances. His enthusiasm is unpretentious and contagious.