I have a bit of classical music running through my head. How on earth do I find out what it is?

[SilentBoob]

All I can tell you is that it is very calming and watery. I heard it done on a violin this morning, but am sure have heard a woman singing it.

There's a phrase in it that goes like a waterfall from high to low, sometimes on 4 notes and sometimes on 7. I think.

Umm...

[BCBG]

Was it on the radio?
if so you might be able to find it online on the station playlist?

[toddlerama]

Download the shazam or soundhound app on iphone and sing it to the phone. I do this all the time.

[SilentBoob]

No, it was someone's ringtone!

Will investigate shazam & soundhound.

[MortenHasNiceShirts]

At a guess, is this it?

[SilentBoob]

No it wasn't that. It goes

Ahh ahh ahh ahh ooooooooh from high to low, but not straight down the scale.