14:255 Live Formula 12011Singapore GP 2nd practiceBBC Radio 5 Live Duration: 1 hour, 40 minutes Fri 23rd Sep 2011, 14:25 on BBC Radio 5 Sports ExtraUninterrupted commentary on the second practice session for the Singapore Grand Prix.GenresSportFormula OneBrand5 Live Formula 1Series5 Live Formula 1: 2011 Source: BBC Online