appalling 'f' for fail as it now stands this article is grossly inadequate and misleading the 'development' at the centre of a sonata structure is in reality a 'durchf hrung' i e a 'leading through' various keys the word 'development' is a poor translation of this and has generated a situation in which foolish people analyse a stretch of music not according to what happens in it but in terms of what this wrong word happens to make them think of as every german muscologist and textbook knows the point of a 'development section' is not various varietites of 'thematic modification' it is tonal and harmonic instability after the stability of the second subject key and before the restoration of the tonic has no one actually bothered to listen to what does and doesn't happen in the included extract it's modulatory and that's all this article is too deeply confused to be rescued it should just be deleted hell it doesn't have a single worthwhile source or any idea about the original german terminology pathetic