If' we're talking marina, then she recently provided the vocals for a song made by DECO*27, a very well-known VOCALOID song composer. She's also singing some of the songs on his new album that's coming out.
Seen here:
I personally thought this song wasn't DECO*27's best work (compared to songs like Mozaik Role, Yowamushi Montblanc, Ai Kotoba, Shinkai Summit, and Nisoku Hokou) but it's still solid enough to stand on its own.