Sawako appears (sings/talks) in the following CD singles.

2012.08.01	Kibou ni Tsuite [Type A] (KICM-91410)	Song
2012.08.01	Kibou ni Tsuite [Type B] (KICM-91411)	Song
2013.04.10	Kono Namida wo Kimi ni Sasagu [Type A] (KIZM-201)	Song
2013.04.10	Kono Namida wo Kimi ni Sasagu [Type B] (KIZM-203)	Song
2013.04.10	Kono Namida wo Kimi ni Sasagu [Type C] (KICM-1443)	Song
2013.04.10	Kono Namida wo Kimi ni Sasagu [Type D] (KICM-1444)	Song
2015.08.05	Venus Drive (TKCA-74258)	Song
2015.08.05	Yume no Tsubasa (TKCA-74259)	Song
2015.10.01	Venus Project Character Song CD Battle 04 (VP-004)	Song
2016.02.28	Venus Project Character Song CD Battle 07 (VP-007)	Song
2016.03.19	Pigeon Blanc (P_004)	Song
2016.03.21	Venus Project Character Song CD Battle 08 (VP-008)	Song
2016.03.27	Venus Project Character Song CD Battle 09 (VP-009)	Song
2017.07.12	Shuwarin Dreamin [Pastel Palettes] (BRMM-10092)	Song/Talk
2018.01.17	Yura Yura Ring-Dong-Dance [Pastel Palettes] (BRMM-10106)	Song
2018.08.08	Mouichido Luminous [Pastel Palettes] (BRMM-10130)	Song
2019.02.20	Tenka Touitsu A to Z [Pastel Palettes] (BRMM-10165)	Song
2019.09.18	Kyuu Mai * Flower [Pastel Palettes] (BRMM-10199)	Song
2019.10.26	Issho Full Power / Boku dake no Generality	Song
2019.10.26	Issho Full Power / Koi no Tsuisekisha	Song
2020.03.04	Waku Waku meets Trip [Pastel Palettes] (BRMM-10240)	Song