======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '211'
                                          'artist'  'Clannad'
                                     'text_people'  ''
                                         'release'  'Legend'
                                           'title'  'Now Is Here'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['new age', 'celtic', 'female vocalists', 'irish', 'folk']"
                                     'discogstags'  "['electronic', 'rock', 'folk rock', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '10'
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'loc-eur'
                                             'bpm'  '126'
                                             'key'  '7B'
                                        'acoustid'  '6fc667fb-ead9-407b-ae66-700c1e9b514a'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Legend'
'TBPM' (BPM (beats per minute))                     '126'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur'
'TDOR' (Original release time)                      '1984'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         'Now Is Here'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '211000'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Clannad'
'TPE2' (Band/orchestra/accompaniment)               'Clannad'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'RCA'
'TRCK' (Track number/Position in set)               '2/10'
'TSO2'                                              'Clannad'
'TSOP' (Performer sort order)                       'Clannad'
'TSRC' (ISRC (international standard recording code))  'GBARL8400003'
'TXXX:Acoustid Id'                                  '6fc667fb-ead9-407b-ae66-700c1e9b514a'
'TXXX:Artists'                                      'Clannad'
'TXXX:CATALOGNUMBER'                                'SPCD 1119'
'TXXX:MusicBrainz Album Artist Id'                  'd45641da-371c-430e-8907-6086590ab282'
'TXXX:MusicBrainz Album Id'                         '0998155d-7736-41a7-a40b-ebd1095e155f'
'TXXX:MusicBrainz Album Release Country'            'AU'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/soundtrack'
'TXXX:MusicBrainz Artist Id'                        'd45641da-371c-430e-8907-6086590ab282'
'TXXX:MusicBrainz Release Group Id'                 'b2b01148-7272-3c26-a8ae-ff32a59ce5f5'
'TXXX:MusicBrainz Release Track Id'                 'bc739c93-ce06-45cd-8584-82990009f8e9'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'rock', 'folk rock', 'ambient']
'TXXX:lastfmtags'                                   ['new age', 'celtic', 'female vocalists', 'irish', 'folk']
'TXXX:originalyear'                                 '1984'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.70 dB'
'TXXX:replaygain_track_peak'                        '0.809640'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'529b7e4b-0066-43f4-8f39-42947fbaa216')

========================== row from database ==========================
                                              'id'  1245857
                                            'path'  /data/Music/Bulk/00localcharacter/Clannad/Legend/Clannad - Now is Here.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  211
                                           'genre'  loc-eur
                                        'filesize'  3393474
                                           'mtime'  1658699501
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter is loc eur
                                      'tag_artist'  Clannad
                                     'tag_release'  Legend
                                       'tag_title'  Now Is Here
                                             'bpm'  126.0
                                    'search_title'  'here':3 'is':2 'now':1
                                   'search_artist'  'clannad':1
                                  'search_release'  'legend':1
                                     'search_rest'  'eur':3 'is':1 'loc':2
                                    'search_combo'  'clannad':4B 'eur':8 'here':3A 'is':2A,6 'legend':5C 'loc':7 'now':1A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HAP-2', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']
                                      'lastfmtags'  ['new age', 'celtic', 'female vocalists', 'irish', 'folk']
                                        'tag_date'  1984
                                     'discogstags'  ['electronic', 'rock', 'folk rock', 'ambient']

============================== file details ==============================
                                           'mtime'  1658699501.4120326  (2022-07-24 23:51:41)
                             'size'  3393474