These are the SymfoZone interviews so far.
- Co de Kloet (NPS-radio and fellow Zappa aficionado; 05-12-1999)
- Ton Scherpenzeel (Kayak; 23-01-2000)
- Frank Boeijen (The Gathering; 06-02-2000)
- Alan Case (multi-instrumentalist; 12-03-2000)
- Mick Pointer (Arena; 23-04-2000)
- Mark Robotham (Thieves’ Kitchen; 30-04-2000)
- Arjen Lucassen (Ayreon; 21-05-2000)
- Doug & Carrie Melbourne (Well, it wasn’t exactly an interview, but they were kind enough to share their thoughts exclusively for SymfoZone; 28-05-2000)
- Peter v.d. Ven (Wings Of Steel 04-06-2000)
- Ton Scherpenzeel (Kayak 04-06-2000)
- Erik Norlander (Lana Lane, Rocket Scientists, Ayreon and accomplished solo artist; 11-06-2000)
- Lana Lane (American Queen of Symphonic Rock; 18-06-2000)
- Ana Lara (Oratory vocalist; 17-09-2000)
- Martin Orford (IQ 24-09-2000)
- Anand Mahangoe (guitarist; 04-02-2001)
- Mike Holmes & Peter Nicholls (IQ 24-02-2002)
- Martin Wilson (ex-GLD, ex-EdenCry; 21-04-2002)
- Michael Schmitz (InsideOut Music; 05-05-2002)
- Arjen Lucassen (Star One; 26-05-2002)
- Steve Howe (Yes; 26-05-2002)
- Alan Reed (Pallas; 01-09-2002)
- Liselotte Hegt (Cirrha Niva; 27-10-2002)
- Jasper Joppe Geers (Graphic Designer) (sleeve Tortoise – Trion; 23-11-2003)
- Sanity (04-01-2004)
- Geoff Downes (Asia; 29-08-2004)
- Jim Gilmour (Saga; 19-09-2004)
- Erik Norlander & Lana Lane (26-09-2004)
- Tony Clarkin (Magnum; 24-10-2004)
- Neal Morse (31-10-2004)
- Derek Sherinian (21-11-2004)
- Pieter van Hoorn (Knight Area; 06-02-2005)
- John Mitchell (Kino; 27-02-2005)
- Kayak (Edward Reekers; 15-05-2005)
- Sean Filkins (Big Big Train; 21-10-2007)
- Arjen Lucassen (Ayreon; 27-01-2008)
- Clive Nolan (Caamora; 09-03-2008)
- Alan Reed (Pallas; 13-04-2008)
- Nick Barrett (Pendragon; 28-09-2008)
- Tom Janssen (Bittertown; 22-02-2009)
- Jon Courtney (Pure Reason Revolution; 05-04-2009)
- Arno Menses (SubSignal; 27-09-2009)
- Steve Thorne (22-11-2009)
- Eveline van Kampen (Illumion; 29-11-2009)
- Floor Jansen (ex-After Forever, ReVamp; 30-05-2010)
- Pieter van Hoorn & Arie Groen (Knight Area; 16-01-2011)
- Paul Menel (ex-IQ; 30-01-2011)
- Sean Filkins (17-04-2011)
- Profuna Ocean (04-09-2011)
- Alan Reed (13-11-2011)
- Rindert Lammers, Roy Post & Jordi Repkes (Minor Giant; 26-02-2012)
- Tom-Vidar Salangli & Marius Nilsen (Dimension Act; 18-03-2012)
- Jon Kirkman (author of ‘Yes: A Time And A Word’; 06-05-2012)
- Matt Cohen (The Reasoning; 07-10-2012)
- Adrian Jones & Pieter van Hoorn (Nine Stones Close; 28-10-2012; show #500)
- Jon Kirkman (18-11-2012)
- Martin Wilson, Andy Rowe & Steve Anderson (The Room; 02-12-2012)
- Peter Lindenbergh (Freia Music), Gert-Jan van Middelkoop (Progmotion; 09-12-2012)
- Martin Wilson & Andy Rowe (The Room; 22-11-2015)
- Bas Willemsen (Alarion; 29-05-2016)
- Romy Ouwerkerk (Golden Caves; 19-03-2017)
- Steven Wilson (03-09-2017)