The episode is Three Valentines from Season 6, and Niles is ironing his pants and starts a fire in Frasier's apartment... There is classical music playing in the background, and I was wondering if anyone knew the name of the piece...
Thanks...

Mozart, but I don't know which piece.

Thanks for telling me it is mozart. That helped me narrow it down and I found it... it is marriage of figaro overture...

thanks for telling me it is mozart. That helped me narrow it down and i found it...it is marriage of figaro overture...
Yay!!

How did you figure it out?