I share my quilting studio with DaveTheWave, who collects there his tools for electronic music improvisation, and sometimes I enjoy piecing during his composition hours.
His tunes are a perfect companion for sewing with a rhythm: not only I respond better to the emerging shapes on my design wall, but also I feel confident in changing my texture while keeping unity in the overall piece.

Music improvisation and quilting improvisation are similar: when you find a good balance between control and intuitive response, you are in the flow, you are connected with the medium, the eye switches easily from zoom detail to overview check, and repetitions with variation can proceed.
Where can I learn from, if I want to practice the feeling of improvisation? Keeping a good link between body and mind reminds me of training in sports: you have learnt the basics and, during the match, you seamlessly adjust your strategy according the movements of the team.