Sadly, not much is known about this group. But I'll tell you what I do know. ^^
"I-lulu" (that first letter is an "i") is a Japanese pop/rock group. They made their debut on December 14, 2005, with the release of their "Taiyou no Kasa" single. Their producer is Dai Nagao, who owns True Song Records and its accompanying website, Area404. (^^) I think Dai outsources his material to other studios (probably to reduce costs), because I-lulu's CDs are released by get over the records, Inc. ... which is part of Victor Entertainment.
The group has 2 members:
As for their music, it's a blend of old and new styles. "Kan Hi Zakura", for instance, has a '60s vibe to it, while "Pistol" has more of a modern rock sound. The same goes for "Taiyou no Kasa": it's a mixture of rock/J-Pop (and actually, I think it'd be the perfect song for an anime/television series. ^^) And the acoustic version of "Futari de" proves that I-lulu can perform simple melodies (singing + a guitar), and still make the song become haunting and memorable.
Overall, I was VERY pleased with this group. I'm now one of their fans, and I can hardly wait for their next release! (^^) Hopefully when you're through visiting the site, you'll become a fan too.