Source: NAMM Oral History Project — January 20, 2007 | NAMM staff
Source: MusicRadar — January 18, 2010
Source: Kurzweil Music Systems — January 20, 2010 | Ray Kurzweil
Source: Kurzweil Music Systems — January 14, 2009
Source: NAMM Oral History Project — January 20, 2007 | NAMM staff
Source: MusicRadar — January 18, 2010
Source: Kurzweil Music Systems — January 20, 2010 | Ray Kurzweil
Source: Kurzweil Music Systems — January 14, 2009