======================== unified (from filesystem) ========================
                                         'bitrate'  '227.385'
                                        'duration'  '237'
                                          'artist'  'Reverend Horton Heat'
                                     'text_people'  ''
                                         'release'  'spend a night in the box'
                                           'title'  'the millionaire'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['punk rock', 'psychobilly', 'punk', 'rockabilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '134.556'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'spend a night in the box'
'TBPM' (BPM (beats per minute))                     '134.556'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '1990'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'the millionaire'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Reverend Horton Heat'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['punk rock', 'psychobilly', 'punk', 'rockabilly', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.23 dB'
'TXXX:replaygain_track_peak'                        '0.459014'

========================== row from database ==========================
                                              'id'  1360692
                                            'path'  /data/Music/Bulk/00poprockelectronic/musica/Reverend Horton Heat/spend a night in the box/12 - the millionaire.mp3
                                         'working'  None
                                         'bitrate'  227
                                    'duration_sec'  237
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  6743283
                                           'mtime'  1620526715
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic musica 12 rock rockabilly psychobilly
                                      'tag_artist'  Reverend Horton Heat
                                     'tag_release'  spend a night in the box
                                       'tag_title'  the millionaire
                                             'bpm'  134.556
                                    'search_title'  'millionaire':2 'the':1
                                   'search_artist'  'heat':3 'horton':2 'reverend':1
                                  'search_release'  'a':2 'box':6 'in':4 'night':3 'spend':1 'the':5
                                     'search_rest'  '00poprockelectronic':1 'musica':2 'psychobilly':5 'rock':3 'rockabilly':4
                                    'search_combo'  '00poprockelectronic':12 'a':7C 'box':11C 'heat':5B 'horton':4B 'in':9C 'millionaire':2A 'musica':13 'night':8C 'psychobilly':16 'reverend':3B 'rock':14 'rockabilly':15 'spend':6C 'the':1A,10C
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['punk rock', 'psychobilly', 'punk', 'rockabilly', 'rock']
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526715.3487356  (2021-05-09 04:18:35)
                             'size'  6743283