she's not popular at all here in general , but actually she's really well-known among trance fans. most people agree "M Above & Beoynd Remix" is the best remix by Above & Beoynd (even tho kinda many prefer the non-vocal versions
) and the M EP vinyl thing is one of the best trance out there.
and I can find Ayu's music in a way even at the nearest supermarket , tho only trance remixes on trance-compilation albums lol
