If True School fans ever wonder why they never get to see El Da Sensei stateside (unless of course you were here last year) well, this is one of the reasons. The Returners are a production crew from Poland who linked up with El to produce Global Takeover (it's in Polish, not the music - the website) in 2008. This is one of the tracks from their follow-up album, GTO 2: Nu World.
On Knowledge Be The Key, El enlists Rakka Iriscience of Dilated Peoples to assist with microphone manipulation with The Returners sprinkling ivory and scratches over the booms and the blaps.
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Props to El