Martin says:

This one slightly breaks the ≤10' rule, but Angharad Davies' music is in general long form so at 11'ish this is a short piece for her!)For watching as well as listening. I hope you like microtonal thickening of the note D...!

For context it's worth bearing in mind that Violins, Chair, Tent was created for an event celebrating Tony Conrad, the violinist/composer/experimental filmmaker associated with with drone music (see e.g. Transit of Venus)