Csound is a sound and music synthesis system, providing facilities for composition and performance over a wide range of platforms. It is not restricted to any style of music, having been used for many years in at least classical, pop, techno, ambient
My sound-oriented Android apps have benefitted a lot from Csound5, and I've found the Android implementation to be robust and relatively straightforward to implement and test. The difficulty I often have is finding appropriate examples or documentation of opcodes and .csd syntax. I find it difficult to go from object-oriented Java (abstract, coherent, with lots of good examples) to Csound (concrete, specific, sometimes inconsistent, with not so many examples). I think the community is great (I'm sure I wouldn't have finished these apps without the help of many here)--but it may be time to have another look at the structure of csd with the goal of making it more accessible to a general-purpose developer.