Machine Head is the sixth Deep Purple studio album. It was recorded at the Grand Hotel Montreux, Switzerland in December 1971 with the Rolling Stones Mobile Studio, and released in May 1972.

Led Zeppelin is an english rock band from the 1970's. They have many popular albums, but number 4 [no proper title was produced] is considered by many to be their master work. Featuring the hits "Stairway to Heaven", "Rock and Roll", "Black Dog", and "When the Levee Breaks". Classic records, who mastered this release, is a record mastering company specializing in audiophile Vinyl pressings [like this 200gram 33rpm example] , using a custom all tube cutting and mastering process from the original master tapes. They [CR] seek to perfectly replicate the original vinyl pressings in both sound and asthetics [cover art, liner notes, even paper texture, down to a creepy level of detail usually], while eliminating surface noise and gaining new clarity and quality of acoustics compared to standard releases. Very similar to MFSL in almost every meaningful regard, vinyl only obviously.