Jessica Pavone Clamor Out of Your Head Records   Violist Jessica Pavone has made a detailed study of microtones, excelling as well at techniques such as harmonics, bow pressure, and multi-stops. Clamor, her latest recording for Out of Your Head Records, combines all of these in four extended solo works.   As the title of the recording suggests, there is a fair amount of dissonance and noise. Not so on the first track, “Neolttwigi,” in which sumptuous multi-stops, modal melodies, and the exploration of multiple overtone series combine in one of Pavone’s most memorable compositions to date.   “Nu Shu,”