======================== unified (from filesystem) ========================
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                                        'duration'  '189'
                                          'artist'  'the greek archives'
                                     'text_people'  ''
                                         'release'  'Songs Of The Underground Vol. 5'
                                           'title'  'Eroine Kai Mayrak-Stellakis'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '20'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'loc-eur-greece'
                                             'bpm'  '129.813'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 00000604 000005DF 0000287B'
'COMM:iTunNORM:eng'                                 (' 00000604 000005DF 0000287B 0000294F 0001954E 0001954E 00005F33 00006274 '
 '0001FB0A 0001FB0A')
'COMM:iTunes_CDDB_IDs:eng'                          '20+CF623DBF0F6514463746B207C062ED82+1933834'
'TALB' (Album/Movie/Show title)                     'Songs Of The Underground Vol. 5'
'TBPM' (BPM (beats per minute))                     '129.813'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-greece'
'TDRC' (Recording time)                             '1935'
'TENC' (Encoded by)                                 'iTunes v4.7.1'
'TIT2' (Title/songname/content description)         'Eroine Kai Mayrak-Stellakis'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'the greek archives'
'TRCK' (Track number/Position in set)               '4/20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
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'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.30 dB'
'TXXX:replaygain_track_peak'                        '0.456286'

========================== row from database ==========================
                                              'id'  1401607
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Greek Archives/Songs Of The Underground Vol. 5/04 Eroine Kai Mayrak-Stellakis.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  189
                                           'genre'  loc-eur-greece
                                        'filesize'  4542504
                                           'mtime'  1621627053
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe Greek Archives 04 loc eur greece
                                      'tag_artist'  the greek archives
                                     'tag_release'  Songs Of The Underground Vol. 5
                                       'tag_title'  Eroine Kai Mayrak-Stellakis
                                             'bpm'  129.813
                                    'search_title'  'eroine':1 'kai':2 'mayrak':3 'mayrakstellakis':5 'stellakis':4
                                   'search_artist'  'archives':3 'greek':2 'the':1
                                  'search_release'  '5':7 'of':2 'songs':1 'the':3 'underground':4 'vol':5,6
                                     'search_rest'  '00mid':1 'archives':5 'eur':7 'europe':3 'greece':8 'greek':4 'loc':6 'north':2
                                    'search_combo'  '00mid':16 '5':15C 'archives':8B,20 'eroine':1A 'eur':22 'europe':18 'greece':23 'greek':7B,19 'kai':2A 'loc':21 'mayrak':3A 'mayrakstellakis':5A 'north':17 'of':10C 'songs':9C 'stellakis':4A 'the':6B,11C 'underground':12C 'vol':13C,14C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627052.626234  (2021-05-21 21:57:32)
                             'size'  4542504