Ruby Hughes's new album for BIS, 'Echo', finds her in the company of Huw Watkins, as both pianist and composer. His song cycle, Echo, written for Ruby, and commissioned by Carnegie Hall, sits at the programme's centre and is flanked by a sequence of short pieces by Bach (both sung and for solo piano), a handful of folksongs and three works by three more living composers, Deborah Pritchard, Cheryl Frances-Hoad and Errolyn Wallen. James Jolly went to visit Ruby to discuss the album and some of the emotional waves it responds to, or even sends out.