Bueno, pues por eliminación quedarían estos de tu lista:
ESTUDIOS:
1. October Equus - Hydra (2004, CRUZIAL)*
3. October Equus - October Equus (2006, MA.RA.CASH Records)*
4. Gulag - Sesiones perdidas 2005 (2014, OctoberXart)
5. October Equus - Charybdis (2008, RAIG)*
6. Ángel Ontalva - Land of rain and steel (2013, OctoberXart)
7. Ángel Ontalva & The Sham Fonk Rhythm Section - Sakha Stomp/Brother Gendos/Ninth Line (2013, OctoberXart)
8. October Equus - Memories vol. 1 - rehearsals 2009 (2012, OctoberXart)
11. October Equus - Saturnal (2011, Altrock)
12. Ángel Ontalva - Mundo Flotante (2012, OctoberXart)
14. Alfonso Muñoz y Ángel Ontalva - Éxtasis y Tormento de Camilla Sodoma (2013, OctoberXart)
15. Muñoz / Ontalva / Trilla - Las Ocasiones Perdidas/Isla Purgatorio (2013, OctoberXart)
16. October Equus - Permafrost (2013, OctoberXart)
17. Ángel Ontalva & Vasco Trilla - Aceite de perro / Balimonster (2013, OctoberXart)
18. Egea / Ontalva / Trilla - Tiempos de furia (2013, OctoberXart)
21. October Equus Quartet - Isla Purgatorio (2013, Clamshell Records)
22. October Equus - BarCo Rehersals 2014 (2016, OctoberXart)
25. Drop Dead Ugly Radio - Drop Dead Ugly Radio (2016, Momentum Records)*
26. Ángel Ontalva - K-Faces Suite (2014, OctoberXart)
29. Ángel Ontalva - Tierra Quemada (2015, OctoberXart)