03:001Xtra's Mixtape with Seani BSeani's Dubstep Mash-UpBBC Radio 1 Duration: 2 hours Sun 19th Sep 2010, 03:00 on BBC Radio 1 Wales1Xtra's Seani B has the biggest upfront flavours in the mix.GenresMusicHip Hop, RnB & DancehallExperimental & NewMusicHip Hop, RnB & DancehallGarageMusicDance & ElectronicaDrum & BassBrand1Xtra's Mixtape with Seani B Source: BBC Online