BaBe's 1987 single "I Don't Know!" offered a hard rock and metal sound, a notable departure from their typical pop style. The single was released on Pony Canyon.
- The single was released on May 2, 1987.
- The label was ポニーキャニオン.
- The genre is listed as hard rock and metal.
BaBe was a Japanese pop duo. They were known for their upbeat dance-pop songs.
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