revert in music two octaves plus a semitone equals dear dicklyon i agree with you that without a rs we should not include a lot of text on this however even if i cannot find a rs right now the fact cannot be in dispute since it is as valid as for which i would not know how to find a rs could we not agree on including this one sentence in the disputed sightings section hoping that someone will find this knowledge useful and or will find a source for it we could attach the fact tag if you like talk