======================== unified (from filesystem) ========================
                                         'bitrate'  '161.544'
                                        'duration'  '193'
                                          'artist'  'Magnolia Electric Co.'
                                     'text_people'  ''
                                         'release'  'Fading trails'
                                           'title'  'the old horizon'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alt country', 'americana', 'folk', 'indie rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-alt'
                                             'bpm'  '136.828'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Fading trails'
'TBPM' (BPM (beats per minute))                     '136.828'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-alt'
'TDRC' (Recording time)                             '2006'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'the old horizon'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Magnolia Electric Co.'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '05'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'alt country', 'americana', 'folk', 'indie rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.99 dB'
'TXXX:replaygain_track_peak'                        '0.887279'

========================== row from database ==========================
                                              'id'  1275277
                                            'path'  /data/Music/Bulk/00localcharacter/Magnolia Electric Co. - Magnolia Electric Co/Fading Trails/05 the old horizon.mp3
                                         'working'  None
                                         'bitrate'  161
                                    'duration_sec'  193
                                           'genre'  loc-namerica-country-alt
                                        'filesize'  3934740
                                           'mtime'  1621629743
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Trails 05 loc namerica country alt
                                      'tag_artist'  Magnolia Electric Co.
                                     'tag_release'  Fading trails
                                       'tag_title'  the old horizon
                                             'bpm'  136.828
                                    'search_title'  'horizon':3 'old':2 'the':1
                                   'search_artist'  'co':3,4 'electric':2 'magnolia':1
                                  'search_release'  'fading':1 'trails':2
                                     'search_rest'  'alt':5 'country':4 'loc':2 'namerica':3 'trails':1
                                    'search_combo'  'alt':14 'co':6B,7B 'country':13 'electric':5B 'fading':8C 'horizon':3A 'loc':11 'magnolia':4B 'namerica':12 'old':2A 'the':1A 'trails':9C,10
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alt country', 'americana', 'folk', 'indie rock']
                                        'tag_date'  2006
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621629742.5637367  (2021-05-21 22:42:22)
                             'size'  3934740