It was a chilly winter morning when John, a freelance audio engineer, received an email from a client with a daunting task. A beloved jazz musician, known for his soulful saxophone playing, had lost his entire archive of recordings from the 1980s due to a studio fire. The only surviving copies of his music were a set of worn, analog master tapes that had been stored in a separate location. The musician wanted John to digitize these tapes and restore them to their former glory.