Johannes Brahms’ Liebeslieder–Walzer (1869 & 1875), Op. 52 and Op. 65, are a cheerful, short, witty set of songs full of anger, joy and rejection. These part-songs are accompanied by one piano, with four hands and any number of voices can perform any selection. These enchanting works are performed as part of Barbara Hannigan’s Momentum project, which teams up new talent with more established performers. (Resonus)