Stroma is one of New Zealand’s finest contemporary chamber ensembles, comprising players from the NZSO and other freelance Wellington performers. Since its inaugural concert in 2000, Stroma has performed regularly, with a repertoire of fresh, cutting-edge compositions. Stroma has also been active in commissioning new works from New Zealand composers. Stroma has appeared at each New Zealand Festival of the Arts since 2002, as well as the International Jazz Festival 2003, the Wellington Cathedral Festival 2003 and the Christchurch Festival of the Arts 2005. They also toured for Chamber Music New Zealand in 2004.

Critics have called Stroma "one of the most interesting and original ensembles to have emerged recently", describing its performances as "vibrant and exhilarating", "stunning" and "staggeringly fine".