It is a self-produced single, released for sale in limited quantities at her live shows and official site for 500 yen.
- Mama (ママ)
- Arranged By – Kamata Masato
- Lyrics By, Composed By – Ishii Rika
Ishii had this to say about the single:
"This is the song I wrote first when I decided to start writing again. I wrote it after having turned off the lights in my room and just watched the moonl ight. The melody within me, who’s born in this country Japan, just became a song… kinda! It’d make me really happy if it would reach your hearts as well!"
- In 2004, a live double disc-DVD called VISUALBOX1/BLREACH!! with the catalog number BLRV-0001, It is a two hour long female vocal live event. Ishii is credited as the 22nd performer of 24 girls, singing the song Kotoshima.
- Track two is printed as Mama (Shokai Ji Ten-kyoku) (ママ (初回持典曲)) on the sleeve. Her official web site has it llisted as Mama (Live Version). Mama is also avaialble on her indies release Autumn Selection 2008, but the songs have different lengths.
- Discography: Ishii Rika Official Web Site - mobile
|Singles||As Peachy: 1. Super Jet Shoes ~Mirai wo Aruku Kutsu~ | 2. Snow Paradise | 3. Yumemiru Chikara|
Indie: 1. Kotoshima | 2. Ao | 3. blue
Event: 1. Kimi wo Sagashiteru | 2. Kagetsu Yoru | 3. Fuyu no Ashioto | 4. Nijiiro Button
|Albums||Original: 1. Aoi Kuma | 2. Slow Love | 3. La mer|
|Collaborations||The Douyou Pops 1 Christmas to Fuyu no Uta Shuu | The Douyou Pops 2 Haru no Uta Shuu | Folk Songs 2 | The Douyou Pops 3 Natsu no Uta Shuu | Morning Musume Single Medley ~Hawaiian~ | Hawaiian de Kiku Morning Musume Single Collection | The Douyou Pops 4 Aki no Uta Shuu | Shinsaku Douyou Pops 1|
|Units & Other Acts|
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