This is part of a series using gestural large brushstrokes in blackboard paint, with oil colour overlaid with painting knives. It's partly inspired by the sounds made by corvidae and other birds in and around the trees in autumn. The painting is available via the Tarpey Gallery.
"When the green woods laugh with the voice of joy, And the dimpling stream runs laughing by; When the air does laugh with our merry wit, And the green hill laughs with the noise of it;
When the meadows laugh with lively green, And the grasshopper laughs in the merry scene; When Mary and Susan and Emily With their sweet round mouths sing 'Ha ha he!'
When the painted birds laugh in the shade, Where our table with cherries and nuts is spread: Come live, and be merry, and join with me, To sing the sweet chorus of 'Ha ha he!' "
-William Blake, 'Laughing Song', from 'Songs of Innocence'
A number of interesting musical settings to Blake poems, by Jeff Gillett, are here: http://www.youtube.com/user/JandEGillett#p/u/4/M9pvcWA8fYA etsy link