Herbie Treehead is a London based children's artist. In 1998 he produced an album of original music for kids and adults. The album 'Sleepy songs and not very sleepy songs' was assembled to accompany his theatre production 'Cherub's Garden'. This was a hit at the Edinburgh Fringe Festival two years running and transferred to the Royal National Theatre, London.
A batch of CDs were made and distributed several years ago. Bootlegs of 'Sleepy songs and not very sleepy songs' have been circling the world ever since. The album was reissued in 2005.