Naxos 8574495, expected 24 March 2023, to contain two string trios (Op.33 serenade of 1906 and trio in A major of 1889), Romanza for horn and string quartet, and other works, is described @ Presto Classical (https://www.prestomusic.com/classical/products/9454378--leone-sinigaglia-complete-works-for-string-quartet-vol-2-gavotta-novelletta-momento-antico-string) and also @ Naxos (https://www.naxos.com/CatalogueDetail/?id=8.574495).