Replying to Sound track pro

so i have had the opportunity to play with the piece of software and i have to say i had a lot of fun. basically it is a program for macs that lets you make music by just layering looping sound effects. for example you would have like a drum beat that you put on a layer and then a trumpet tune or anything. but to get to the point, i don't have a mac, so i was wondering if there are any alternatives to this for PCs or if they make it for PCs.

thanks you