Souichirou appears (sings/talks) in the following miscellaneous CDs.

1994 11.25	Fire Woman (TKCA-70534)	Talk
1999 02.24	Voice Theater Series 7 Pe Tenshi ga Yuku (TYCY-010012)	Talk
1999 04.21	Kafuka (MMCM-7001)	Talk
1999 11.17	D.N.Angel Wink 2nd Target (MMCC-4007)	Talk
1999 12.15	D.N.Angel Wink 3rd Target (MMCC-4008)	Talk/Song
2000 01.21	Mugen no Ryvius Sound Edition 1 Sere 6.350 (VICL-60488)	Talk
2000 03.23	West End (MMCC-3701)	Talk
2000 04.21	Mugen no Ryvius Character Song Collection (VICL-60559)	Song
2000 05.24	D.N.Angel trilogy (MMCC-4009)	Song
2000 07.26	Planet Ladder ()	Talk
2000 11.15	Seikimatsu Prime Minister 2 (KECH-1175)	Song
2000 11.18	Tales of Eternia drama CD vol 1 (MACM-1111)	Talk
2000 12.16	Tales of Eternia drama CD vol 2 (MACM-1112)	Talk
2001 01.27	Tales of Eternia drama CD vol 3 (MACM-1113)	Talk
2001 02.21	Trouble Chocolate Wils E (MMCC-4017)	Talk
2001 02.24	Tales of Eternia drama CD vol 4 (MACM-1114)	Talk
2001 03.21	Shin'yuu -Dear Friends- (MMCC-3011)	Talk
2001 03.24	Tales of Eternia drama CD vol 5 (MACM-1115)	Talk
2001 03.31	Cafe Kichijouji de 9 ()	Talk
2001 08.22	Angelic Layer Character Song Album (AVCA-14190)	Song
2002 03.22	Harukanaru Toki no Naka de Shishin Mini Album [Byakko] (KECH-1204)	Talk
2002 03.22	Harukanaru Toki no Naka de Shishin Mini Album [Genbu] (KECH-1205)	Talk
2002 04.27	Ai Yori Aoshi Uta Emaki (MMCC-7014)	Talk
2003 10.24	Cinematic Sound Drama GetBackers -Divine Revelation- (MKC-0001)	Talk
2004 02.14	Cinematic Sound Drama GetBackers -The Place of a God's Death- (MKC-0002)	Talk
2004 07.23	Kare first love (MMCC-4060)	Talk
2004 09.24	Ai Yori Aoshi Ryojouhen (MMCC-7035)	Talk
2005 01.26	1 Nen 777 Gumi (FCCC-29)	Talk
2005 01.31	Cinematic Sound Drama GetBackers -Legend of Vampire- (MKC-0003)	Talk
2005 03.25	Cinematic Sound Drama GetBackers -Beast Howling- (MKC-0004)	Talk
2005 11.02	Mirumo de Pon! Sayonara Mirumo" Very Best Songs (GFCA-26)	Song
2005 12.16	Gun X Sword drama CD (VICL-61831)	Talk
2006 01.31	Cinematic Sound Drama GetBackers -Bug's Karma- (MKC-0009)	Talk
2006 03.08	Gun X Sword Episode + (VICL-61870)	Talk
2006 08.31	Cinematic Sound Drama GetBackers -The Origin- (MKC-0010)	Talk
2007 12.29	Higurashi no Nakukoroni Kai Character Case Book 1 (FCCM-0200)	Talk
2008 01.16	Higurashi no Nakukoroni Kai Character Case Book 2 (FCCM-0201)	Talk
2008 02.14	Higurashi no Nakukoroni Kai Character Case Book 3 (FCCM-0202)	Song/Talk
2009 04.08	Macross F Nyan Dra 1 (VTCL-60102)	Song/Talk
2009 05.06	Macross F Nyan Dra 2 (VTCL-60103)	Talk
2009 07.08	Macross F Nyan Dra 4 (VTCL-60105)	Talk
2009 12.29	Sora no Otoshimono Ending Theme Collection (COCX-35988)	Song
2009 12.29	Sora no Otoshimono Tenshi ga Kureta Gekibanshuu (COCX-35987)	Song
2010 03.10	Sora no Ongakusai (COCX-36010)	Song
2010 12.22	Sora no Otoshimono Forte (COCX-36598)	Song
2010 12.22	Sora no Otoshimono Forte ED Theme Collection (COCX-36599)	Song
2011 02.16	Sora no Otoshimono Forte Character and Drama Album (COCX-36629)	Song/Talk
2011 07.06	Tokei Jikake no Ongaskushuu (COCX-36820)	Song