OLIVIA CHANEY Shelter (Nonesuch) Queen Of Hearts. the album English folksinger/songwriter Olivia Chaney made with American rock band The Decemberists last year, under the name Offa Rex, was at times almost raucous, regularly busy and well detailed. In its spot-on adaptation of the days when folk met rock in Pentangle/Incredible String Band/Fairport Convention mode, Offa Rex pulled in traditional tales (of miners, maidens and more) with modernish sounds, smudges of psychedelia