I Don't Know (Mika Nakashima song)

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"I Don't Know"
MICA 3 CHU Idon't know.jpg
Single by Mika Nakashima
from the album Voice
A-side I Don't Know
B-side Shut Up
Released July 23, 2008
Format CD, CD+DVD
Genre J-pop
Label Sony
Writer(s) Mika Nakashima & Lori Fine
Mika Nakashima singles chronology
Sakura: Hanagasumi
I Don't Know

"I Don't Know" is Mika Nakashima's 26th single, released on July 23, 2008. It is a collaboration with owarai group Morisanchuu (森三中), released under the name Mica 3 Chu (Mikasanchuu), and is her first single to be released as a CD+DVD format in addition to the regular CD only format.

'I Don't Know' is Mika's first English-language single. 'I Don't Know' and its B-side, 'Shut Up,' are sung entirely in English.

Track listing[edit]

All lyrics written by Mika Nakashima & Lori Fine; all music composed by Lori Fine, arranged by Coldfeet.

No. Title Length
1. "I Don't Know"  
2. "Shut Up"  
3. "I Don't Know" (Instrumental)  
4. "Shut Up" (Instrumental)  


Oricon sales chart (Japan)[edit]

Release Chart Peak Position Sales Total Chart Run
July 23, 2008 Oricon Daily Singles Chart 6 17,708 5 weeks
Oricon Weekly Singles Chart 11
Oricon Monthly Singles Chart
Oricon Yearly Singles Chart 392

External links[edit]