Outsider had recently pre-released "Crying Bird" from his fourth album, and when fans tried to buy his previous songs, they realized that all of his songs from 2007 to 2010, in other words the songs he released under MC Sniper's Sniper Sound, were no longer available.
This turned out to be because Outsider had filed earlier on requesting for his contract to be dissolved due to payment issues and also moved onto a different agency. In turn, Sniper Sound filed their own lawsuit against him asking for his activities to be halted.
Outsider's new agency stated through a press release, "During his contract period, he never received properly calculated payment from his album, digital, CFs, concerts, and events. He also wasn't able to receive clear information regarding some of his production work." They also revealed that Outsider's name was never credited in two songs from MC Sniper's 4th album, nor included in copyrights, even though he had co-written the songs.
Due to this incident, once fellow agency artists Outsider and MC Sniper, two of the most respected names of the Korean hip hop scene, have now come to stand at opposing ends.