======================== unified (from filesystem) ========================
                                         'bitrate'  '100.427'
                                        'duration'  '205'
                                          'artist'  'Christophe'
                                     'text_people'  ''
                                         'release'  'Dimitri 60s 70s'
                                           'title'  "Io prego  e pregherò  (Je sais que c'est l'èté)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-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-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['french', 'chanson francaise', 'singer-songwriter', 'french pop', 'chanson']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '146.0'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri 60s 70s'
'TBPM' (BPM (beats per minute))                     '146.0'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         "Io prego  e pregherò  (Je sais que c'est l'èté)"
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Christophe'
'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'                                        '1'
'TXXX:lastfmtags'                                   ['french', 'chanson francaise', 'singer-songwriter', 'french pop', 'chanson']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.72 dB'
'TXXX:replaygain_track_peak'                        '0.380220'

========================== row from database ==========================
                                              'id'  1502321
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/60s70s/Christophe....Io prego  e pregherò  (Je sais que c_est l_èté)-JrnVuB_c8RY.mp3
                                         'working'  None
                                         'bitrate'  100
                                    'duration_sec'  205
                                           'genre'  ifs-songwriter
                                        'filesize'  2578903
                                           'mtime'  1621628547
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 60s70s Christophe....Io c_est l_èté) JrnVuB_c8RY ifs songwriter
                                      'tag_artist'  Christophe
                                     'tag_release'  Dimitri 60s 70s
                                       'tag_title'  Io prego  e pregherò  (Je sais que c'est l'èté)
                                             'bpm'  146.0
                                    'search_title'  'c':10 'cest':12 'e':3 'est':11 'ete':14,17 'io':1 'je':6,7 'l':13,16 'lete':15,18 'preghero':4,5 'prego':2 'que':9 'sais':8
                                   'search_artist'  'christophe':1
                                  'search_release'  '60s':2 '70s':3 'dimitri':1
                                     'search_rest'  '60s70s':1 'b':21 'c':5 'c8ry':16,22 'christophe':2 'christopheio':4 'est':6 'ete':8,10,12,14 'ifs':17 'io':3 'jrn':19 'jrnvub':15 'l':7,9,11,13 'songwriter':18 'vu':20
                                    'search_combo'  '60s':21C '60s70s':23 '70s':22C 'b':43 'c':10A,27 'c8ry':38,44 'cest':12A 'christophe':19B,24 'christopheio':26 'dimitri':20C 'e':3A 'est':11A,28 'ete':14A,17A,30,32,34,36 'ifs':39 'io':1A,25 'je':6A,7A 'jrn':41 'jrnvub':37 'l':13A,16A,29,31,33,35 'lete':15A,18A 'preghero':4A,5A 'prego':2A 'que':9A 'sais':8A 'songwriter':40 'vu':42
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', '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'  ['french', 'chanson francaise', 'singer-songwriter', 'french pop', 'chanson']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628547.211798  (2021-05-21 22:22:27)
                             'size'  2578903