User:SOTO/Forum Archive/The Reference Desk/@comment-6502724-20130313061209/@comment-1432718-20130313154255
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User:SOTO/Forum Archive/The Reference Desk/@comment-6502724-20130313061209/@comment-1432718-20130313154255 13 down is piano (Human Nature/The Family of Blood) so it sounds like 12 across would then be MP.