Heledd studied as a theatre maker before moving on to work as a session bass guitarist, touring with Emmy the Great, Chloe Howl, Paper Aeroplanes and Ynys. She started writing her own music as the front woman of art-rock band, HMS Morris with highlights including, performing at Glastonbury, Green Man, SXSW, releasing three albums and gaining three Welsh Music Prize nominations.
Astudiodd Heledd fel crëwr theatr cyn symud i weithio fel gitarydd fâs sesiwn, yn teithio efo Emmy the Great, Chloe Howl, Paper Aeroplanes a Ynys. Fe gychwynodd gyfansoddi ei cherddoriaeth ei hun fel prif-leisydd y band gelf-roc HMS Morris, efo uchafbwyntiau’r band yn cynnwys, perfformio on Glastonbury, Green Man, SXSW, rhyddhau tri albwm a derbyn tri enwebiad i’r Wobr Gerddoriaeth Gymreig.