It's disco or some very similar genre.

Recording of me humming what I remember of the song:
zSHARE - idme.mp3

It should auto-play when the page loads. Excuse my horrible voice/musical ability.

I heard this when I called someone - it was the music that came on just before their voicemail picked up. (Unfortunately it wasn't a personal call and I can't call them back, so I can't just ask the person.) I have a hunch it's a famous song, but I don't know the rest of it or what it's called.

Thank you!