======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '200'
                                          'artist'  'Big City Orchestra'
                                     'text_people'  ''
                                         'release'  'trixxy pixxy'
                                           'title'  'throne for a loss'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-UNU-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['industrial', 'noise', 'avant garde', 'experimental', 'old school "
 "industrial']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '96.1'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'trixxy pixxy'
'TBPM' (BPM (beats per minute))                     '96.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'throne for a loss'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Big City Orchestra'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['industrial', 'noise', 'avant garde', 'experimental', 'old school industrial']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.12 dB'
'TXXX:replaygain_track_peak'                        '0.577782'

========================== row from database ==========================
                                              'id'  1375235
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Big City Orchestra - csr009/csr009-03-bco_throne-for-a-loss.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  200
                                           'genre'  electronic-experimental
                                        'filesize'  4808576
                                           'mtime'  1622801629
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm csr009 csr009 03 bco_throne electronic experimental
                                      'tag_artist'  Big City Orchestra
                                     'tag_release'  trixxy pixxy
                                       'tag_title'  throne for a loss
                                             'bpm'  96.1
                                    'search_title'  'a':3 'for':2 'loss':4 'throne':1
                                   'search_artist'  'big':1 'city':2 'orchestra':3
                                  'search_release'  'pixxy':2 'trixxy':1
                                     'search_rest'  'bco':2 'csr009':1 'electronic':4 'experimental':5 'throne':3
                                    'search_combo'  'a':3A 'bco':11 'big':5B 'city':6B 'csr009':10 'electronic':13 'experimental':14 'for':2A 'loss':4A 'orchestra':7B 'pixxy':9C 'throne':1A,12 'trixxy':8C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'noise', 'avant garde', 'experimental', 'old school industrial']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622801629.39196  (2021-06-04 12:13:49)
                             'size'  4808576