If you were to peek into my iPod these days, you’d find a lot of mashups. The ones that really have me impressed are from DJ Earworm, who has done some really great stuff. My favorites include “No One Takes Your Freedom,” which effortlessly mashes up the Scissor Sisters, George Michael, Aretha Franklin and the Beatles, and “Policy of Sweet Dreams,” which collides Depeche Mode’s “Policy of Truth” with the Eurythmics’ “Sweet Dreams.” Excellent stuff.

If you were to use a software metaphor for mashups, we’re starting to see the 2.x series, which are more technically polished than the first generation. Like software, music gets better with each iteration, so by the time we get to 5.0 things should be great.

Take hip hop, for example. If “Rappers’ Delight” and other early stuff was 1.x, by the time Public Enemy came around it was 3.x, and now we’re out in the 7 or 8 series.

But back to mashups. Check out CCC’s “Revolved” with its brilliant Beatles mashups including “Eleanor Ciccone” which mashes up ‘Eleanor Rigby’ and Madonna’s ‘Ray of Light’, as well as ‘Got to Get You In The Mood,’ which hilariously mashes ‘Got to Get You Into My Life’ with Glenn Miller’s ‘In The Mood.’