The Melloman, uses Walkmans and cassette tapes to play original Mellotron samples, or whatever cassette tapes you want to put in. Inside the box, there are 14 continuously running Walkmans mounted side by side. The first Walkman is designated for drums, and the next 13 provide sampled loops for 25 notes. [via] Link.
The Melloman – DIY Mellotron