Vintage Record Collection: Switched-On Bach, Wendy (Walter) Carlos Performing on the Moog Synthesizer, Columbia Masterworks Records, Released in 1968
From Wikipedia: Switched-On Bach is a musical album by Wendy Carlos (originally released under the name of Walter Carlos) and Benjamin Folkman, produced by Carlos and Rachel Elkind and released in March 1968 by Columbia Masterworks Records. It played a key role in popularizing classical music performed on electronic synthesizers, which had until then been relegated to experimental and "pop" music. This fostered a significant increase in interest in electronically rendered music in general, and the Moog synthesizer in particular.
Switched-On Bach was one of the first classical albums to sell 500,000 copies. Entering Billboard's pop Top 40 charts on March 1, 1969, it climbed quickly to the Top 10; it stayed in the Top 40 for 17 weeks, and in the Top 200 for more than a year. In the 1969 Grammy Awards, the album took three prizes: Best Classical Album, Best Classical Performance – Instrumental Soloist or Soloists (with or without orchestra) and Best Engineered Classical Recording.