This is also true of the great Miles Davis Quintet albums of 1964-68. The original LPs, fiddled in post-production by Macero or others, sound terrible. The master tapes, as unveiled on CDs remastered in the past five years—and on audiophile-quality LPs reissued by the mail-order-only Mosaic Records—sound terrific. Mark Wilder, the Sony engineer who remastered the recent batch of Monk reissues, was also responsible for the Miles gems.