Dream Theater drummer Mike Portnoy is a fan of music. The man actively listens to, writes about, discusses, and tours with his favorite artists -- both new and old, so when asked to shuffle through his iPod with Noisecreep, we waited with bated breath to see what would come up on his playlist.

"Along with the TiVo, the iPod is the greatest invention of the 21st century," Portnoy tells Noisecreep. "I remember a time not too long ago that when I'd leave to go on tour, I'd have to pack giant CD folders with 100s of CDs to keep me company on the road ... but now I can have my entire library at my fingertips!"

So what's in his library?

As Portnoy explains, "My latest iPod is filled with everything from Abba to Accept, Bee Gees to Black Flag," but as Noisecreep discovers, it's peppered with Anthrax, Wilco, Megadeth, Clutch, Jethro Tull, Steve Vai, Dredg, Scorpions, Planet X and much more.

Here's some excerpts:
Beardfish -- 'South of the Border'
"My favorite prog band to emerge in many years. This Swedish band sound like they are straight out of 1973! And this tune is them at their most Zappa-esque."

TNT -- 'Northern Lights'
"OK ... '80s hair metal ... sorry! Strong high clean vocals (James LaBrie was surely a Tony Harnell fan) and great shredding guitar. But yes, it does sound a bit dated in the middle of this shuffle."

Oceansize -- 'One Day All This Can Be Yours'
"Awesome band from the U.K. that are probably the best thing out there in the alternative-prog vein of Porcupine Tree. Kinda like if Radiohead were into odd time signatures."

Neal Morse -- 'Entrance'
"S---, I was afraid this would happen. I hate when stuff I played on pops up on shuffle. Well luckily, I cannot get enough of Neal's music. Regardless of having recorded nine studio albums together (three with Transatlantic, five Neal solo albums and one covers CD), Neal is hands down one of my favorite song writers of all time. Absolutely one of my 'desert island' artists, and hearing this amazing song again just totally pumped me up."

Lynyrd Skynyrd -- 'Free Bird'
"A cliché? perhaps. Played out? I suppose. One of the greatest rock 'n' roll songs/anthems ever written? Absolutely!
It doesn't matter how many thousands of times I've heard this, when it comes up in a shuffle, I never skip it!"

Anthrax -- 'Burst'
"This is from the first album of the '90s Bush era. (That sounds so political -- should I say the Bush Administration?) I love everything Anthrax have ever done, and I go way back to the beginning with them as I've been listening to them since the days of seeing them play at L'amour in Brooklyn back in 1984. They are all good friends of mine and I know they still have some kick ass albums in them. Can't wait!"

Read Portnoy's whole list here, and give us YOUR 5 iPod songs. Hit shuffle and let us know what you're listening to!