Brennan Heart has remixed songs by many other hardstyle artists, such as Headhunterz, Technoboy and The Prophet.
In 2011, she also made a small ironic cameo appearance in Norwegian Hardstyle producers Da Tweekaz song and music video "P.A.P (People against Porn)" for the record label Dirty Workz.
On their project, they have worked with Tiësto, Hardwell, Justin Prime, Bassjackers, and hardstyle duo Noisecontrollers.
Festival - A music festival that mostly plays hardstyle and related genres such as hardcore techno, hard house and hard trance, the event has been hosted in Sydney in mid-September since 2009 at the Sydney International Regatta Centre.
Metekohy worked with Headhunterz again in 2011, on his song "Tonight" which also featured another fellow Dutch hardstyle act: Noisecontrollers, the song proved successful also and was nominated for a 2012 hard dance award of which the song was put upon the compilation album "Hard Dance Awards 2012" where it was featured as a remix from Alpha².
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Project One proved popular with hardstyle fans and they played at many festivals in 2010 including DefQon1 (of which Headhunterz provided the 2009 anthem, and Wildstylez the 2010 anthem that year).