Def Manic's "Crystal Silence" is a piece of truly experimental hip-hop. It begins with an interesting vocal sample before Def Manic subtly blends his own vocals in. When his vocals take full control, you can't help but be roped in. It's a true head-knocker over a downtempo, chilled-out beat. "Crystal Silence" may be a short track, but with a great beat and Def Manic's skilled flow, it doesn't take long to feel the vibe.