>>> x.request = ["tracks", 0, 1, "track_id:258735", "tags:Aa"]
>>> x.result()
{u'count': 1, u'titles_loop': [{u'artist': u'Composer3', u'title': u'Rose', u'albumartist': u'A Perfect Circle', u'composer': u'Composer1, Composer2, Composer3', u'trackartist': u'A Perfect Circle', u'id': 258735}]}
>>> x.request = ["tracks", 0, 1, "track_id:258735", "tags:a"]
>>> x.result()
{u'count': 1, u'titles_loop': [{u'artist': u'Composer3', u'id': 258735, u'title': u'Rose'}]}
>>> x.request = ["tracks", 0, 1, "track_id:258735", "tags:A"]
>>> x.result()
{u'count': 1, u'titles_loop': [{u'trackartist': u'A Perfect Circle', u'albumartist': u'A Perfect Circle', 
u'id': 258735, u'composer': u'Composer1, Composer2, Composer3', u'title': u'Rose'}]}
