======================== unified (from filesystem) ========================
                                         'bitrate'  '246.147'
                                        'duration'  '189'
                                          'artist'  'Egisto Macchi'
                                     'text_people'  ''
                                         'release'  'Voix'
                                           'title'  'Pensée'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'avant garde', 'library music', 'experimental', "
 "'italian']")
                                     'discogstags'  "['electronic', 'classical', 'abstract', 'contemporary', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '15'
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '145.7'
                                             'key'  '9A'
                                        'acoustid'  'a3ede6e1-05a0-40df-9d70-38c67727a728'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Voix'
'TBPM' (BPM (beats per minute))                     '145.7'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDOR' (Original release time)                      '1975'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Pensée'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'Egisto Macchi'
'TPE2' (Band/orchestra/accompaniment)               'Egisto Macchi'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Gemelli'
'TRCK' (Track number/Position in set)               '1/15'
'TSO2'                                              'Macchi, Egisto'
'TSOP' (Performer sort order)                       'Macchi, Egisto'
'TXXX:Acoustid Id'                                  'a3ede6e1-05a0-40df-9d70-38c67727a728'
'TXXX:CATALOGNUMBER'                                'GG.ST. 10.031'
'TXXX:MusicBrainz Album Artist Id'                  '5f1867c6-fd49-4bab-ab7f-a35c34587f7e'
'TXXX:MusicBrainz Album Id'                         '16b655ff-e23c-4e90-87b9-9c66f383b4d1'
'TXXX:MusicBrainz Album Release Country'            'IT'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5f1867c6-fd49-4bab-ab7f-a35c34587f7e'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'classical', 'abstract', 'contemporary', 'experimental']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'avant garde',
 'library music',
 'experimental',
 'italian']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.49 dB'
'TXXX:replaygain_track_peak'                        '0.845715'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'4ad3731e-283d-4af1-8781-6d7678d5fb5c')

========================== row from database ==========================
                                              'id'  969003
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Egisto Macchi - Voix/01 - Egisto Macchi - Pensée.mp3
                                         'working'  None
                                         'bitrate'  246
                                    'duration_sec'  189
                                           'genre'  electronic-experimental
                                        'filesize'  5843729
                                           'mtime'  1622801320
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 01 electronic experimental
                                      'tag_artist'  Egisto Macchi
                                     'tag_release'  Voix
                                       'tag_title'  Pensée
                                             'bpm'  145.7
                                    'search_title'  'pensee':1,2
                                   'search_artist'  'egisto':1 'macchi':2
                                  'search_release'  'voix':1
                                     'search_rest'  'electronic':1 'experimental':2
                                    'search_combo'  'egisto':3B 'electronic':6 'experimental':7 'macchi':4B 'pensee':1A,2A 'voix':5C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['contemporary classical', 'avant garde', 'library music', 'experimental', 'italian']
                                        'tag_date'  1975
                                     'discogstags'  ['electronic', 'classical', 'abstract', 'contemporary', 'experimental']

============================== file details ==============================
                                           'mtime'  1622801320.2534719  (2021-06-04 12:08:40)
                             'size'  5843729