======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '175'
                                          'artist'  'Στέλιος Καζαντζίδης'
                                     'text_people'  ''
                                         'release'  'Γυάλινος κόσμος'
                                           'title'  'Ο γυάλινος κόσμος'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['greek', 'laika', 'folk', 'oldies', 'greece']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '12'
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'loc-eur-greece'
                                             'bpm'  '136.092'
                                             'key'  '5B'
                                        'acoustid'  'cffc1ecb-af19-4dad-bc60-d8e003388f12'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000445 00000338 0000123B'
'COMM:iTunNORM:eng'                                 (' 00000445 00000338 0000123B 00000D6F 0001FC15 0001FC15 00005169 00004541 '
 '0001FBE7 0001FBFE')
'TALB' (Album/Movie/Show title)                     'Γυάλινος κόσμος'
'TBPM' (BPM (beats per minute))                     '136.092'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-greece'
'TDOR' (Original release time)                      '1973'
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         'Ο γυάλινος κόσμος'
'TKEY' (Initial key)                                '5B'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Στέλιος Καζαντζίδης'
'TPE2' (Band/orchestra/accompaniment)               'Στέλιος Καζαντζίδης'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Μίνως Μάτσας & Υιός Α.Ε.'
'TRCK' (Track number/Position in set)               '1/12'
'TSO2'                                              'Kazantzidis, Stelios'
'TSOP' (Performer sort order)                       'Kazantzidis, Stelios'
'TXXX:Acoustid Id'                                  'cffc1ecb-af19-4dad-bc60-d8e003388f12'
'TXXX:Artists'                                      'Στέλιος Καζαντζίδης'
'TXXX:CATALOGNUMBER'                                'MSM 172'
'TXXX:MusicBrainz Album Artist Id'                  'cbdc91c8-787e-4485-b70a-d2a61e9fbca8'
'TXXX:MusicBrainz Album Id'                         '6ba4327c-3c17-4319-9533-cdc867269e4c'
'TXXX:MusicBrainz Album Release Country'            'GR'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'cbdc91c8-787e-4485-b70a-d2a61e9fbca8'
'TXXX:MusicBrainz Release Group Id'                 '44ad179e-a394-4673-ae8b-8ac8bef69c7c'
'TXXX:MusicBrainz Release Track Id'                 '6ca135a0-ec61-4d0c-a8b0-ebf4f0e4e591'
'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'                                       'Grek'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['greek', 'laika', 'folk', 'oldies', 'greece']
'TXXX:originalyear'                                 '1973'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.03 dB'
'TXXX:replaygain_track_peak'                        '0.588421'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'f326765d-1238-4c18-831d-9e387152235a')

========================== row from database ==========================
                                              'id'  1399624
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Γυάλινος Κόσμος/01 Ο Γυάλινος Κόσμος.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  175
                                           'genre'  loc-eur-greece
                                        'filesize'  2914968
                                           'mtime'  1621627058
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe Κόσμος 01 Κόσμος loc eur greece
                                      'tag_artist'  Στέλιος Καζαντζίδης
                                     'tag_release'  Γυάλινος κόσμος
                                       'tag_title'  Ο γυάλινος κόσμος
                                             'bpm'  136.092
                                    'search_title'  'gualinos':4 'kosmos':6 'o':2 'γυαλινος':3 'κοσμος':5 'ο':1
                                   'search_artist'  'kazantzidis':4 'stelios':2 'καζαντζιδης':3 'στελιος':1
                                  'search_release'  'gualinos':2 'kosmos':4 'γυαλινος':1 'κοσμος':3
                                     'search_rest'  '00mid':1 'eur':7 'europe':3 'greece':8 'kosmos':5 'loc':6 'north':2 'κοσμος':4
                                    'search_combo'  '00mid':15 'eur':21 'europe':17 'greece':22 'gualinos':4A,12C 'kazantzidis':10B 'kosmos':6A,14C,19 'loc':20 'north':16 'o':2A 'stelios':8B 'γυαλινος':3A,11C 'καζαντζιδης':9B 'κοσμος':5A,13C,18 'ο':1A 'στελιος':7B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  5B
                                           '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-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['greek', 'laika', 'folk', 'oldies', 'greece']
                                        'tag_date'  1973
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621627058.235024  (2021-05-21 21:57:38)
                             'size'  2914968