I found out about this by having a poor headphone jack connection on a cassette walkman as a kid. I would actually take that and record out from that to anothe

I found out about this by having a poor headphone jack connection on a cassette walkman as a kid. I would actually take that and record out from that to another tape, so I could have 'instrumental' versions of the songs. And, no - it doesn't work very well at all; it sounds like a poor 64kbps MP3 with bizarre artifacts and; yes - many missing instruments.