16:00On 1XtraVis sits in for WestwoodBBC Radio 1Xtra Duration: 3 hours Fri 15th Jun 2012, 16:00 on 1xtraBig tunes and big guests with the Big Dawg - plus the latest 1Xtra News.GenresMusicPop & ChartMusicHip Hop, RnB & DancehallMusicPop & ChartExperimental & NewBrandOn 1Xtra Source: BBC Online