Associations with musicians such as John Mills (guitar) and Lowri Blake (cello) led to Betty Roe writing songs comcombining voices with non-keyboard instruments.
Roe's compositions for Soprano and Double Bass originated with a request from David Heyes, for the publisher Yorke Edition, a specialist publisher of music for Double Bass.
The first was the two Jazz Songs, described by Making Music as "Real fun for both the soprano and the double bass... a splendid light hearted item for a school concert"
The publisher rates the Double Bass parts of Jazz Songs and Cat and Mouse as Grade 1-3. However, both sets require an accomplished singer with some strong low notes and the ability to bring out the humour in the songs.
In Betty Roe's archive there is also an unpublished manuscript of an arrangement of The Adventures of Isabel annotated by David Heyes.