Violist Tabea Zimmermann recently published the article In defence of the viola on The Guardian:

I think the viola came into its own after the 19th century, when people were tiring of Paganini’s faster-and-faster-and-higher-and-higher pyrotechnics, and we moved into an expressionist era, when colours and nuances became more important. And yet the instrument’s capacities are still being developed today. Many composers are writing for the viola, and we need to be open-minded in finding new repertoire. (Tabea Zimmermann, The Guardian, 28 November 2014)

One of these pieces is Georges Lentz’ Monh for viola, orchestra and electronics, which was premièred in 2005 by Zimmermann and the Orchestre Philharmonique du Luxembourg. Find a [German] interview with Zimmermann on Monh on YouTube: