Portland, Oregon, singer-songwriter Haley Heynderickx shared her first new song in more than six years this week, the serene “Seed of a Seed,” heralding a return that has been much anticipated since the 2018 release of her acclaimed full-length debut, I Need to Start a Garden, via Mama Bird Recording Co. “Seed of a Seed” centers Heynderickx’s purposeful vocals and …