I am trying to locate all the cds in my collection on which someone plays organ. This would be entered under the role field on the Musicians tab in Album or Track Properties. There is even a "complete the fill-in" for organ in that field. Yet there is no way to search for roles. It is not one of the fields in the pulldown under Query-Advanced. If I use the [any field] field, then I get lots of cds I don't want since it includes those where a track title includes organ (as in The Organ Grinder) and some where I cannot even figure out the field where OCD found "organ". I tried to create a boolean condition such as:
[any field] contains organ and not title contains organ
but OCD does not have a way to create and not conditions.
[any field] contains organ and title does not contain organ
doesn't work because that would exclude only cds on which every title contained organ (I know, I tried it).

Any suggestions?