======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '185'
                                          'artist'  'Στέλιος Καζαντζίδης'
                                     'text_people'  ''
                                         'release'  'Γυάλινος κόσμος'
                                           'title'  'Νοιώθω μια κούραση βαρειά'
                                           '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'  '12'
                                      'tracktotal'  '12'
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'loc-eur-greece'
                                             'bpm'  '112.508'
                                             'key'  '3B'
                                        'acoustid'  '14c07afc-b798-4315-8093-4151c69cafd7'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000616 000006F5 000019E9'
'COMM:iTunNORM:eng'                                 (' 00000616 000006F5 000019E9 00001CC6 00029855 00029855 000042C4 00004E6F '
 '00029855 00029855')
'TALB' (Album/Movie/Show title)                     'Γυάλινος κόσμος'
'TBPM' (BPM (beats per minute))                     '112.508'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-greece'
'TDOR' (Original release time)                      '1973'
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         'Νοιώθω μια κούραση βαρειά'
'TKEY' (Initial key)                                '3B'
'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)               '12/12'
'TSO2'                                              'Kazantzidis, Stelios'
'TSOP' (Performer sort order)                       'Kazantzidis, Stelios'
'TXXX:Acoustid Id'                                  '14c07afc-b798-4315-8093-4151c69cafd7'
'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'                 '4e3261e9-49f4-48f4-aac5-6cd98907595b'
'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'                        '+3.04 dB'
'TXXX:replaygain_track_peak'                        '0.338025'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'29d94a63-30bd-423e-bb36-7792f2b9e7f3')

========================== row from database ==========================
                                              'id'  1391634
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Γυάλινος Κόσμος/12 Νιώθώ Μιά Κούραςη Βαρειά.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  185
                                           'genre'  loc-eur-greece
                                        'filesize'  3072714
                                           'mtime'  1621627065
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe Κόσμος 12 Νιώθώ Μιά Κούραςη Βαρειά loc eur greece
                                      'tag_artist'  Στέλιος Καζαντζίδης
                                     'tag_release'  Γυάλινος κόσμος
                                       'tag_title'  Νοιώθω μια κούραση βαρειά
                                             'bpm'  112.508
                                    'search_title'  'bareia':8 'kourasi':6 'mia':4 'noiotho':2 'βαρεια':7 'κουραση':5 'μια':3 'νοιωθω':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 'bareia':13 'eur':15 'europe':3 'greece':16 'kosmos':5 'kourasi':11 'loc':14 'mia':9 'niotho':7 'north':2 'βαρεια':12 'κοσμος':4 'κουραςη':10 'μια':8 'νιωθω':6
                                    'search_combo'  '00mid':17 'bareia':8A,29 'eur':31 'europe':19 'greece':32 'gualinos':14C 'kazantzidis':12B 'kosmos':16C,21 'kourasi':6A,27 'loc':30 'mia':4A,25 'niotho':23 'noiotho':2A 'north':18 'stelios':10B 'βαρεια':7A,28 'γυαλινος':13C 'καζαντζιδης':11B 'κοσμος':15C,20 'κουραςη':26 'κουραση':5A 'μια':3A,24 'νιωθω':22 'νοιωθω':1A 'στελιος':9B
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  3B
                                           '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'  1621627065.3453157  (2021-05-21 21:57:45)
                             'size'  3072714