user (Required) : The user who performed the taggings. tag (Required) : The tag you're interested in. taggingtype[artist|album|track] (Required) : The type of items which have been tagged limit (Optional) : The number of results to fetch per page. Defaults to 50. page (Optional) : The page number to fetch. Defaults to first page. api_key (Required) : A Last.fm API key.