The newly open Hollywood Rip Ride Rockit roller coaster at Universal Studios lets riders choose from 30 different songs to listen to during the ride. (Click here for the full list.) But there have been rumors online of up to 999 songs available by following specific unlisted instructions.

Yesterday we interviewed Louis Alfieri, the ride’s creative director, for an article in our upcoming Fall 2009 issue. When asked about the hidden tracks, he replied, with a big smile, “Rockit has the ability to offer layers of discovery that no other coaster has before.”

So with that answer, we had to try to access the hidden tracks ourselves, and it works! Here’s how to access the hidden tracks. But keep in mind that the hidden songs aren’t available for an on-ride video.

When you sit down, instead of selecting the songs listed, hold your finger on the Hollywood Rip Ride Rockit logo at the top of the screen for about five to 10 seconds. When you lift your finger, a number keypad should appear on the screen. Enter any three digit number from 001 to 999 and touch enter. You’ll hear a click but no confirmation screen will come up. (At least it didn’t for me.)
EDIT: It appears there aren’t 999 songs to choose from. If you enter a three digit number that doesn’t contain a bonus song, you’ll get the default song, Busy Child by The Crystal Method. Bryan reported below in the comments that the bonus tracks seem to be between these numbers: 101-132, 301-312, 501-508, 701-718, 901-904

Now all we need to do is figure out what numbers correspond to which songs. These haven’t been confirmed, but here’s what’s been reported so far:

#101 – The Temples of Syrinx by Rush
#102 – Blues Before and After by The Smithereens
#103 – Break on Through by The Doors
#104 – Crocodile Rock by Elton John
#105 – Do it Again by Steely Dan
#106 – Don’t You by Candlebox
#107 – Drivin’ Rain by Gov’t Mule
#108 – 8 Miles High by The Byrds
#109 – Fantasy by Aldo Nova
#110 – Fool by Rollins Band
#111 – For The Love Of God by Steve Vai
#112 – Freebird by Lynyrd Skynyrd
#113 – Immigrant Song by Led Zeppelin
#114 – Just Because by Jane’s Addiction
#115 – Live by Lenny Kravitz
#116 – Mexicola by Queens of The Stone Age
#121 – Runnin Down a Dream by Tom Petty
#122 – Start Me Up by The Rolling Stones
#123 – Stockholm Syndrom by Muse
#124 – Diary of Jane by Breaking Benjamin
#125 – The Great Gig in the Sky by Pink Floyd
#127 – Urgent by Foreigner
#128 – Vertigo by U2
#129 – Wheel in the Sky by Journey
#130 – Won’t Get Fooled Again by The Who
#131 – Klein Mandelbrot remix by The Blue Man Group
#132 – Drumbone by Blue Man Group
#301 – Float On by Modest Mouse
#302 – I Want You Back by The Jackson Five
#303 – In My Pocket by The Cat Empire
#304 – It’s Still Rock And Roll To Me by Billy Joel
#305 – Brothers Gonna Work it Out by Public Enemy
#306 – Lose Yourself by Eminem
#307 – Ride Like The Wind by Christopher Cross
#308 – Run to You by Bryan Adams
#309 – Save Room by John Legend
#310 – Vogue by Madonna
#311 – You Make Loving Fun by Fleetwood Mac
#312 – My Everything by Barry White
#504 – Smokin’ Gun by Robert Cray
#506 – The Thrill is Gone by BB King
#507 – Who Did You Think I Was by John Mayer Trio
#508 – Pivot by Dry
#701 – Cyanide by Metallica
#702 – Endangered Species by Flaw
#703 – For Whom The Bell Tolls by Metallica
#704 – Forever Down by Black Label Society
#705 – How Heavy This Axe by The Sword
#706 – Just One Fix by Ministry
#707 – Know your Enemy by Rage Against the Machine
#708 – Let’s Go by Ministry
#709 – Mouth for War by Pantera
#710 – Painkiller by Judas Priest
#711 – Paranoid by Black Sabbath
#712 – Temptation’s Wings by Down
#713 – The Wicker Man by Iron Maiden
#714 – Unreal by Ill Nino
#715 – Wake Up Dead by Megadeth
#716 – We Call This Mutha Revenge by Suicidal Tendencies
#718 – You’ve Got Another Thing Comin’ by Judas Priest
#772 – Dance or Die by Family Force 5 (active during Rock The Universe 2011)
#773 – Mess of Me by Switchfoot (active during Rock The Universe 2011)
#774 – Until the Whole World Hears by Casting Crown (active during Rock The Universe 2011)
#775 – Make Your Move by Third Day (active during Rock The Universe 2011)
#776 – The One by Brandon Heath (active during Rock The Universe 2011)
#777 – Eastern Hymn by David Crowder Band (active during Rock The Universe 2011)
#778 – Faceless by RED (active during Rock The Universe 2011)
#779 – House of Mirrors by Tenth Avenue North (active during Rock The Universe 2011)
#780 – Zombie by Family Force 5
#781 – Gods Not Dead by Newsboys
#782 – Monster by Skillet
#783 – Fine Fine Life by For King & Country
#784 – Freq Dat by Group 1 Crew
#785 – Song by Tenth Avenue North
#786 – Showstopper by Tobymac
#901 – Movin’ Right Along by Kermit The Frog and Fozzy Bear
#902 – Rainbow Connection by The Muppets
#903 – Your Attitude Towards Cuttlefish by Paper Moon
#904 – Night on Bald Mountain by Modest Mussorgsky

Please help us fill in the list. If you ride and can identify any secret songs, let us know the song name and number and we’ll update the list.