Rock Band 4 was unveiled in March 2015, and released on October 6, 2015. List of songs released in 2018. The following table lists the available songs for the Rock Band series released in 2018. All songs available in packs are also available as individual song downloads on the same date, unless otherwise noted. These are the five songs you have to play in Rock Band 4, according to Harmonix. These aren't songs that will be on the Rock Band 4 disc, this is a list of some of the best, and most enjoyable. As always, players can unlock hidden tracks from favorite artists both new and classic. Check back often to see what extra DLC content is available, and don't worry, songs from the original Rock Band are compatible with the new version! Rock Band 4: Available Now.