* [http://www.engadget.com/2005/10/28/music-thing-the-zx-spectrum-specdrum-module/ Site about the SpecDrum]
* [http://www.crashonline.org.uk/27/specdrum.htm Review of the Spectrum version]
* [http://www.worldofspectrum.org/hardware/feat42.html Another Spectrum review]
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