via synthtopia: Synth pioneer Tom Oberheim introduced a new version of his Oberheim SEM synthesizer at the Red Bull Music Academy presentation in Boston on June 3, 2009.
The original Oberheim SEM (Synthesizer Expander Module) is a classic bit of gear that’s best known for its unique 12dB/Octave filter.
Tom Oberheim and the new SEM from stretta on Vimeo.
For full write-up you can visit Synthtopia
Also just added a new YOUTUBE video on the workshop: