Mattson's older brother soon joined him, and they set up a recording studio to write and record music for the commercial market. Mattson's synthesizer collection was growing, and had begun to take up a lot of space. Regarding his revelation that inspired the Syntar: "Oct. 04, 1978, I was alone in the room running back and forth between the consoles and the keyboards when I said to myself, 'What I need is....' and the concept of the Syntar hit me. Then I thought, 'Somebody should make one of these.' Then I thought, 'Hey, I could do this!'" In January 1980, Mattson went to the NAMM show in
Anaheim, where he walked by the Moog booth, only to see a non-working prototype of the Moog Liberation "keytar" hanging on a mannequin. Mattson returned home, resolved to produce the Syntar first. He decided to release the Syntar under his own leadership with his new company name, Performance Music Systems. However, Moog was better financed, and the Liberation became the first mass-produced "keytar". ==Between Syntar and Mattson Mini Modular==