======================== unified (from filesystem) ========================
                                         'bitrate'  '113.671'
                                        'duration'  '558'
                                          'artist'  'Veronique Chalot'
                                     'text_people'  ''
                                         'release'  'Dimitri 60s 70s'
                                           'title'  "L'Empoisonneuse"
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-1', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['folk', 'french', 'breton', 'female vocalists', 'french folk']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '90.4'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri 60s 70s'
'TBPM' (BPM (beats per minute))                     '90.4'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         "L'Empoisonneuse"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Veronique Chalot'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['folk', 'french', 'breton', 'female vocalists', 'french folk']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.38 dB'
'TXXX:replaygain_track_peak'                        '0.426352'
'TXXX:youtube'                                      '9phjz18XwHc'

========================== row from database ==========================
                                              'id'  1502334
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/60s70s/Veronique Chalot - L_Empoisonneuse-9phjz18XwHc.mp3
                                         'working'  None
                                         'bitrate'  113
                                    'duration_sec'  558
                                           'genre'  loc-eur-france
                                        'filesize'  7933595
                                           'mtime'  1620533042
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 60s70s L_Empoisonneuse 9phjz18XwHc loc eur france
                                      'tag_artist'  Veronique Chalot
                                     'tag_release'  Dimitri 60s 70s
                                       'tag_title'  L'Empoisonneuse
                                             'bpm'  90.4
                                    'search_title'  'empoisonneuse':2 'l':1 'lempoisonneuse':3
                                   'search_artist'  'chalot':2 'veronique':1
                                  'search_release'  '60s':2 '70s':3 'dimitri':1
                                     'search_rest'  '60s70s':1 '9phjz18xw':8 '9phjz18xwhc':4 'empoisonneuse':3 'eur':6 'france':7 'hc':9 'l':2 'loc':5
                                    'search_combo'  '60s':7C '60s70s':9 '70s':8C '9phjz18xw':16 '9phjz18xwhc':12 'chalot':5B 'dimitri':6C 'empoisonneuse':2A,11 'eur':14 'france':15 'hc':17 'l':1A,10 'lempoisonneuse':3A 'loc':13 'veronique':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1']
                                      'lastfmtags'  ['folk', 'french', 'breton', 'female vocalists', 'french folk']
                                        'tag_date'  1970
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620533041.7146287  (2021-05-09 06:04:01)
                             'size'  7933595