It is a fact that as the music industry transitioned from vinyl and tape to CD, many albums and singles were "abandoned," so to speak. Sure, a lot of the mainstream music from the past was being offered on CD, but the more obscure records and tapes were less fortunate and never offered on the then-new format. Sadly, all analog media deteriorates with age, and it becomes necessary to make digital back-up copies of the old records and tapes. I am considering starting a business that not only backs up clients' records and tapes, but also removes pops, clicks and hisses. A million other businesses like this already exist, and I am wondering if any of them were profitable.