Complex sentence: In Mexico, the single was released as a CD single and also sold poorly, a year later a cassette version was released with a radio edit version of "Techno Cumbia", which was added as a b-side track.
Split into simpler sentences: In Mexico, the single was released as a CD single and also sold poorly. Ayear later a cassette version was released with a radio edit version of "Techno Cumbia" as a b-side track.