======================== unified (from filesystem) ========================
                                         'bitrate'  '208.682'
                                        'duration'  '149'
                                          'artist'  'Yann-Fañch Kemener'
                                     'text_people'  ''
                                         'release'  'Celtic Mouth Music'
                                           'title'  'Marie Louise (excerpt)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-3', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk', 'celtic', 'breton', 'celtic fusion', 'breizh']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '37'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'loc-eur'
                                             'bpm'  '111.9'
                                             'key'  '1A'
                                        'acoustid'  'b9e26796-5c56-4934-8a26-19ec340db6cf'
rest: ''

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

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'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Celtic Mouth Music'
'TBPM' (BPM (beats per minute))                     '111.9'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur'
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Marie Louise (excerpt)'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Yann-Fañch Kemener'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Ellipsis Arts...'
'TRCK' (Track number/Position in set)               '5/37'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Kemener, Yann-Fañch'
'TXXX:ASIN'                                         'B0000059U2'
'TXXX:Acoustid Id'                                  'b9e26796-5c56-4934-8a26-19ec340db6cf'
'TXXX:CATALOGNUMBER'                                'CD4070'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '121bdc02-f649-4092-aac0-cb5a9b8f1621'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '5a9788be-752a-43f2-be6d-3ee6ba340186'
'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:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['folk', 'celtic', 'breton', 'celtic fusion', 'breizh']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.600864'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6e37b73a-6186-4f72-9c8e-94a8b773f292')

========================== row from database ==========================
                                              'id'  1476119
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/Celtic Mouth Music (Ellipsis Arts, 1997) [202k VBR]/05-Marie Louise .mp3
                                         'working'  None
                                         'bitrate'  208
                                    'duration_sec'  149
                                           'genre'  loc-eur
                                        'filesize'  3910962
                                           'mtime'  1620536152
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad (Ellipsis Arts, 1997) [202k VBR] 05 loc eur
                                      'tag_artist'  Yann-Fañch Kemener
                                     'tag_release'  Celtic Mouth Music
                                       'tag_title'  Marie Louise (excerpt)
                                             'bpm'  111.9
                                    'search_title'  'excerpt':3,4 'louise':2 'marie':1
                                   'search_artist'  'fanch':2,5 'kemener':7 'yann':1,4 'yannfanch':3,6
                                  'search_release'  'celtic':1 'mouth':2 'music':3
                                     'search_rest'  '1':4,5,6 '1997':12,13 '202k':14,15 'arts':10,11 'ellipsis':8,9 'eur':19 'loc':18 'trad':7 'va':1,2 'vbr':16,17 'world':3
                                    'search_combo'  '1':18,19,20 '1997':26,27 '202k':28,29 'arts':24,25 'celtic':12C 'ellipsis':22,23 'eur':33 'excerpt':3A,4A 'fanch':6B,9B 'kemener':11B 'loc':32 'louise':2A 'marie':1A 'mouth':13C 'music':14C 'trad':21 'va':15,16 'vbr':30,31 'world':17 'yann':5B,8B 'yannfanch':7B,10B
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  1A
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['folk', 'celtic', 'breton', 'celtic fusion', 'breizh']
                                        'tag_date'  1997
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620536151.8317604  (2021-05-09 06:55:51)
                             'size'  3910962