Deletion of Graphical comparison of musical scales and mathematical progressions

Comment: per ,  #7,  and . We don't have to wait interminably for an "expert" to show up. If the article doesn't demonstrate through references that it is accurate and not original research, then it has to go. We don't retain potentially misleading and unsourced articles on the off-chance they may be correct. I see no valid keep rationales here
Stance: delete
Cited policy: Wikipedia:No original research (WP:OR||WP:NOTDIR||WP:NOTTEXTBOOK||WP:NOTESSAY)