Many of these formats didn't have enough bandwidth to support music when introduced. Most cassette formats were introduced specifically for dictation: > The co

Many of these formats didn't have enough bandwidth to support music when introduced. Most cassette formats were introduced specifically for dictation: > The compact cassette technology was originally designed for dictation machines, but improvements in fidelity led the Compact Cassette to supplant the Stereo 8-track cartridge and reel-to-reel tape recording in most non-professional applications. https://en.wikipedia.org/wiki/Compact_Cassette https://en.wikipedia.org/wiki/Compact_Cassette