Solo trumpet is a great curiosity. While we are getting used to lots of solo recordings, there have been so many on whatever instrument you choose to think of given the strictures of making music in isolation during the Pandemic, solo trumpet is rarer. While not everyone's cup of tea you certainly focus in as a listener far harder than you do if the music is complex and busy in the mix. Dave Douglas, above, photo Greenleaf, one of the jazz world's greatest technicians, says: ''One thing I have never done is a solo trumpet project. Trumpet alone… It's daunting on the trumpet because of the physical challenges of the instrument.''

Inspired by the Hudson River which he visited regularly during what he calls the ''shutdown'' some of the Hudson Solo pieces he says ''are tied directly to thoughts about the river. Some are in appreciation of my heroes.'' And these include Wadada Leo Smith, Baikida Carroll and Kenny Wheeler. 'Mute Court' is streaming via Douglas' own Greenleaf label. It's at once avant-garde and yet highly accessible, with a lot of call and response across different voicings whether achieved open horn or muted. There is no little humour in the rendering – you'd swear duck quacks manage to make an appearance, even – and highly recommendable.