Before he obtained the technology to produce CD's in his home studio, MKR released his homemade songs on cassette tapes. These tapes were produced only in very low quantities, and very few still exist. If you happen to have one or more of them, congratulations! You have a valuable and highly collectible item that would probably sell on eBay for literally several dollars. Well, maybe almost a dollar. With shipping and handling. But don't sell them - hold onto them, they are sure to increase in value. Someday maybe you can pay your child's college tuition with the proceeds from selling just one of them.

The first of these tape releases was a C-90 tape called "Weeds" and released in 1990. Weeds was filled with 24 songs because MKR had that many songs available and wasn't sure there would ever be another tape released, so he just kept adding songs until the master tape was full. Some of these songs, like White Lies and Celebrity, survived to be re-recorded and released again on later CD's.

In 1994, MKR released another cassette, entitled "10688", after the address where the songs were recorded. This tape was a C-60, as he wanted a more digestible size. MKR moved to a new house that year, in which he built a basement recording studio which he named "The Hole" (after the teen rec center in Scheveningen in the late 1960's and early 70's), with digital recording equipment.

In 1997, MKR released a limited-run cassette tape containing a number of politically-oriented songs as a special Christmas gift for members of the on-line political discussion group known affectionately as the "Lying Socialist Weasels Club." One of the "members" (membership being a very loosely defined concept with this bunch) of this on-line community was a man named Steve Kangas, who later became the subject of one of MKR's songs, Pittsburgh. The tape contained such sarcastic tunes as "Wham, Bam, Thank You Saddam", a rocking commentary on the 3-day Mother Of All Battles in Iraq. Written in 1991, just days after the end of those hostilities when George H. W. Bush declined to invade Iraq (because he and his Secretary of Defense, Dick Cheney, felt that such an invasion would turn much of the world against the US and would ensnare us in a never-ending, costly quagmire that would make little sense <sigh>), the song noted the euphoria that swept the US as the nation shed its Vietnam-era doubts and regained our national pride about our ability to kick the crap out of third-world countries.