19:00Bethan ElfynLisa Gwilym sits inBBC Radio Wales Duration: 3 hours Sat 21st Jan 2017, 19:00 on BBC Radio Wales FMLisa Gwilym sits in for Bethan Elfyn with classic rock, new tunes and indie anthems.GenresMusicClassic Pop & RockMusicRock & IndieExperimental & NewBrandBethan Elfyn Source: BBC Online