Owners of the original Rock Band looking to bring that game's songs into Rock Band 4 now can, provided they meet a few requirements. Harmonix announced this week that the Rock Band export option for Rock Band 4 is now available for PlayStation 4 users in North America. In a support forum post, the developer said it's working to bring the feature to PS4 players in Europe and Xbox One owners.

Additionally, to export Rock Band's songs into Rock Band 4, you needed to have purchased an export option; it was sold for a period of five years but is no longer available to buy. Also note that the export process only works within the same console family; i.e. PS3-to-PS4.

A total of 47 Rock Band tracks are available to export into Rock Band 4, while the eight additional songs listed below will be available "at a later time."

Anarchy Club - "Blood Doll" Bang Camaro - "Pleasure (Pleasure)" Death of the Cool - "Can't Let Go" Freezepop - "Brainpower" Honest Bob and the Factory-to-Dealer Incentives - "I Get By" The Acro-brats - "Day Late, Dollar Short" Tribe - "Outside" VAGIANT - "Seven"

Harmonix also notes that three songs from Rock Band's setlist will never be able to be exported, presumably due to licensing arrangements. These songs are:

Black Sabbath – "Paranoid" Iron Maiden – "Run to the Hills" Metallica – "Enter Sandman"

The export process itself involves downloading every song individually, something Harmonix says you'll want to do on a stable Internet connection for the best results. A full set of export instructions are available here.

Rock Band 4 added the ability to export Rock Band 3 songs into the game in December. In the future, the plan is for songs from Rock Band 2, Lego Rock Band, and Green Day: Rock Band (but never The Beatles: Rock Band) to eventually be made available in Rock Band 4. Check out the chart below for more.