Thank you for contacting AaE for help.

It looks like you have a Colorado blue spruce not a pine. Colorado blue spruce trees are not suited to Minnesota's climate and, as a result, are susceptible to a couple of different diseases; one of which looks like what I'm seeing in the picture, Rhizosphaera needle cast. Here is a link to more information about Rhizosphaera needle cast from the U of MN Extension.

You might want to get a definitive confirmation by contacting a professional arborist or by sending in a sample to the U of MN Extension service Plant Disease Clinic.  Here is a link to the clinic's website which lists its services and prices and how to submit a sample.