Fellow Sierra Leoneans Janka Nabay and Bajah (of The Dry Eye Crew) team up for “Nar London” — a new-form national anthem in support of Ola Sesay, the only Sierra Leonean athlete competing in the 2012 London Summer Olympics. The track follows in the lightning-speed percussive vein of Janka and The Bubu Gang‘s modern bubu tunes, with a matching rapid fire verse from Bajah to close things off. The video combines original footage of Olay training at the Olympic village in London with scenes from Janka and Bajah’s recent performance in Fort Greene — joining them onstage are SL natives Papa Adakwa and Chief Boima. Watch the video above and download “Nar London” below. Janka’s En Say Yah is available Aug 7 via Luaka Bop.