======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '153'
                                          'artist'  'Wendy Carlos'
                                     'text_people'  ''
                                         'release'  'Swirched-On Bach'
                                           'title'  'Air on a G string'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'electronic', 'experimental', 'classical', 'moog']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '1968'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-early;mi-earlysynth'
                                             'bpm'  '117.4'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:PeakValue:¡H\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1H\x00\x00')
'TALB' (Album/Movie/Show title)                     'Swirched-On Bach'
'TBPM' (BPM (beats per minute))                     '117.4'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental-early', 'mi-earlysynth']
'TDRC' (Recording time)                             '1968'
'TENC' (Encoded by)                                 'FairStars Audio Converter'
'TIT2' (Title/songname/content description)         'Air on a G string'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Wendy Carlos'
'TRCK' (Track number/Position in set)               '02'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soundtrack', 'electronic', 'experimental', 'classical', 'moog']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'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'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.29 dB'
'TXXX:replaygain_track_peak'                        '0.592563'

========================== row from database ==========================
                                              'id'  770811
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Wendy Carlos/[1968] Switched-On Bach/02. Air on a G string.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  153
                                           'genre'  electronic-experimental-early;mi-earlysynth
                                        'filesize'  4921216
                                           'mtime'  1636401907
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm [1968] Switched 02. electronic experimental early;mi earlysynth
                                      'tag_artist'  Wendy Carlos
                                     'tag_release'  Swirched-On Bach
                                       'tag_title'  Air on a G string
                                             'bpm'  117.4
                                    'search_title'  'a':3 'air':1 'g':4 'on':2 'string':5
                                   'search_artist'  'carlos':2 'wendy':1
                                  'search_release'  'bach':4 'on':2 'swirched':1 'swirchedon':3
                                     'search_rest'  '02':4,5 '1968':1,2 'early':8,10 'earlysynth':12 'electronic':6 'experimental':7 'mi':9,11 'switched':3
                                    'search_combo'  '02':15,16 '1968':12,13 'a':3A 'air':1A 'bach':11C 'carlos':7B 'early':19,21 'earlysynth':23 'electronic':17 'experimental':18 'g':4A 'mi':20,22 'on':2A,9C 'string':5A 'swirched':8C 'swirchedon':10C 'switched':14 'wendy':6B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-3', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'electronic', 'experimental', 'classical', 'moog']
                                        'tag_date'  1968
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636401906.5799963  (2021-11-08 21:05:06)
                             'size'  4921216