Ive done a little Circuit Soundtrack that you may or may not like. 

Its roughly 30secs of hype music followed by a minute of slower music. Ive done it for bag work / Press up & Sit up rest periods but you could use it for other stuff too.

There are 10 second beeps at the end of each hype / chill section so you can go hard at the end and prepare for the intense bits. 
(There is a 20 second intro before the first intense section)

There is also a beep halfway thorough each section to let you know your nearly there.

There is an extra 30 second at the end for you to try to go till failure or just to get a lob on about sexy sexy Carol Vorderman

Michael Mouch