======================== unified (from filesystem) ========================
                                         'bitrate'  '110.95'
                                        'duration'  '190'
                                          'artist'  'Clothilde'
                                     'text_people'  ''
                                         'release'  'Dimitri 60s 70s'
                                           'title'  "Ora so cos'è"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['ye-ye', 'french', '12', 'female vocalists', 'french pop']"
                                     'discogstags'  "['pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '143.8'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri 60s 70s'
'TBPM' (BPM (beats per minute))                     '143.8'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         "Ora so cos'è"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Clothilde'
'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'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['pop', 'rock']
'TXXX:lastfmtags'                                   ['ye-ye', 'french', '12', 'female vocalists', 'french pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.37 dB'
'TXXX:replaygain_track_peak'                        '0.367349'
'TXXX:youtube'                                      'C7SjkM6hCOc'

========================== row from database ==========================
                                              'id'  1504635
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/60s70s/Clothilde - Ora so cos_è-C7SjkM6hCOc.mp3
                                         'working'  None
                                         'bitrate'  110
                                    'duration_sec'  190
                                           'genre'  loc-eur-france
                                        'filesize'  2644416
                                           'mtime'  1620533040
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 60s70s cos_è C7SjkM6hCOc loc eur france
                                      'tag_artist'  Clothilde
                                     'tag_release'  Dimitri 60s 70s
                                       'tag_title'  Ora so cos'è
                                             'bpm'  143.8
                                    'search_title'  'cos':3,6 'cose':5,8 'e':4,7 'ora':1 'so':2
                                   'search_artist'  'clothilde':1
                                  'search_release'  '60s':2 '70s':3 'dimitri':1
                                     'search_rest'  '60s70s':1 'c7sjk':10 'c7sjkm6hcoc':6 'coc':12 'cos':2,4 'e':3,5 'eur':8 'france':9 'loc':7 'm6h':11
                                    'search_combo'  '60s':11C '60s70s':13 '70s':12C 'c7sjk':22 'c7sjkm6hcoc':18 'clothilde':9B 'coc':24 'cos':3A,6A,14,16 'cose':5A,8A 'dimitri':10C 'e':4A,7A,15,17 'eur':20 'france':21 'loc':19 'm6h':23 'ora':1A 'so':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', '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-3']
                                      'lastfmtags'  ['ye-ye', 'french', '12', 'female vocalists', 'french pop']
                                        'tag_date'  1970
                                     'discogstags'  ['pop', 'rock']

============================== file details ==============================
                                           'mtime'  1620533039.8931904  (2021-05-09 06:03:59)
                             'size'  2644416