KROQ AAXMAS pic: Gavin, Gwen, Weatherlys

THOROUGHLY MODERN ROCK: Backstage at the Almost Acoustic Christmas—presented by CBS' flagship Alternative station, The World Famous KROQ—BUSH frontman Gavin Rossdale, Interscope solo star/No Doubt frontwoman/The Voice coach Gwen Stefani, KROQ overlord Kevin Weatherly and Kevin's son Justin discuss their favorite holiday songs, and how tuning your guitar down to D can really make them sound appropriately dark and heavy. Later, our own Ted Volk's amp-melting rendition of "Rudolph the Red-Nosed Reindeer" caused all and sundry to throw goat. (12/15a)