have a classical tune stuck in my head.

have a classical tune stuck in my head.

there is a classical tune in my head and i cant find the author or name! help!

f f f e[flat],d[flat],a[flat] a[flat],g[flat],[rest]
f f f ...continue...

Its played with strings, The tune envisions great doors opening and walking into an oppulent ballroom.  Anyone know what this is?