 By the early 2000s, rapid advances in home computing and digital audio software were making digital multitrack audio recording systems available to the average consumer, and high-quality digital multitrack recording systems like GarageBand were being included as a standard feature on home computers.Stereo sound recording on tape was perfected in 1943 by German audio engineers working for the AEG corporation.Around 250 stereo tape recordings were made during this period (of which only three have survived), but the technology remained a closely guarded secret within Germany until the end of World War II.