Eight-track was a popular music format in the 1960s and 1970s, with cassette tapes eventually replacing them later on. There are several synonyms for the word eight-track, including stereo 8, eight-track tape, cartridge, and 8-track cartridge. These terms all refer to the same format of music storage, but stereo 8 is perhaps the most commonly used. While eight-track tapes are now obsolete, they remain a beloved part of music history for those who grew up during their heyday. Many collectors continue to seek out and purchase vintage eight-track tapes to add to their music collections.