Because of the high quality of the Irving overtures recently posted - many thanks indeed for such generosity and hard work!! - I've been looking into Clarke myself and found a few things. The BL has a set of parts for his incidental music to THE ONLY WAY (of which I'm trying to obtain copies for a Dickens conference this April), there are five works in manuscript in the RCM's Novello collection, including a "Sinfonia da camera [symphony no. 3]", and a friend of mine has examined some of the full scores for the incidental music he wrote for Irving, which are now at the University of Texas. I think the opus no. listing may be reasonably truthful; if he wrote that much music, more's got to exist somewhere, and _some's_ got to be good. I'd be really interested to see his First Symphony, if it still exists, as it got such good notices at its performances; barring that, what does the "Sinfonia da camera" consist of? And what's the string quartet like? (It might make a nice CD pairing with Julius Benedict's.)