I’m big on this custom ringtone thing and wanted something completely different for my alarm. I’m a big Pink Floyd fan, so the clocks ringing in “Time” from “Dark Side of the Moon” seemed a fitting choice. Have a listen:

alarm-time

I list this here for your listening pleasure, if you decide to use it, please own a copy of the song – you can buy it for 99 cents on Pink Floyd - Dark Side of the Moon - Time