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Swan Songs B-Sides is the first EP by American rap rock band Hollywood Undead. It was released on June 23, 2009, and consists of four B-side tracks that were recorded during the sessions of the album Swan Songs but didn't make the final cut.
These four tracks were previously available as bonus tracks on different editions of the album. "The Loss" was released on the Indie Store edition of the album, and "The Natives" was released on the Smartpunk edition, while both "Pain" and "Knife Called Lust" were released on the UK and Japanese editions of the album; "Pain" was also available on the iTunes edition.
The EP was later released on physical 7" as part of Record Store Day 2009.