Tim McGraw -- My Own Greatest Hits Suck!

Tim McGraw is PO'd because his label jacked his greatest hits for an album.

The country star says he's "saddened and disappointed" about a hits album and calls yet another best-of disc "confusing" to fans. He adds he didn't have any involvement in the record, and says "the whole concept is an embarrassment."

His message to fans: "I'm Tim McGraw, and I don't approve their message."