mos 37a 8 letters

[flyby]

37 a 8 letters Companion of the Heroine in Bizets opera Carmen -E-C-D-S

Last one, brain gone dead, sorry

[catsrcool]

MERCEDES

[factor-fiction]

Mercedes according to Google

[Captain2]

Mercédès

[flyby]

Thanks Mark, Happy New Year

[catsrcool]

http://en.wikipedia.org/wiki/Carmen#Roles

[factor-fiction]

Happy to help.
Who is Mark- are you referring to "Mark as best answer"

[cupid04]

Mark Thatcher?

[boxtops]

This one's been asked and answered several times today - it's worth searching sometimes, using the red box at the top, to see if it's been asked before.