======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '381'
                                          'artist'  'Deus'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Let's See Who Goes Down First"
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative rock', 'indie', 'alternative', 'belgian', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock'
                                             'bpm'  '102.9'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '102.9'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-rock'
'TIT2' (Title/songname/content description)         "Let's See Who Goes Down First"
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Deus'
'TXXX:Mp3gain_minmax'                               '100,180'
'TXXX:Mp3gain_undo'                                 '+007,+007,N'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['alternative rock', 'indie', 'alternative', 'belgian', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.67 dB'
'TXXX:replaygain_track_peak'                        '0.349658'

========================== row from database ==========================
                                              'id'  1508502
                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/dEUS/The Ideal Crash/Deus - Let_s See Who Goes Down First.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  381
                                           'genre'  ifs-songwriter-indie-rock
                                        'filesize'  7626136
                                           'mtime'  1637330382
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic poprock indierock dEUS The Ideal Crash Let_s ifs songwriter indie rock
                                      'tag_artist'  Deus
                                     'tag_release'  None
                                       'tag_title'  Let's See Who Goes Down First
                                             'bpm'  102.9
                                    'search_title'  'down':7 'first':8 'goes':6 'let':1 'lets':3 's':2 'see':4 'who':5
                                   'search_artist'  'deus':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'crash':7 'd':14 'deus':4 'eus':15 'ideal':6 'ifs':10 'indie':12 'indierock':3 'let':8 'poprock':2 'rock':13 's':9 'songwriter':11 'the':5
                                    'search_combo'  '00poprockelectronic':10 'crash':16 'd':23 'deus':9B,13 'down':7A 'eus':24 'first':8A 'goes':6A 'ideal':15 'ifs':19 'indie':21 'indierock':12 'let':1A,17 'lets':3A 'poprock':11 'rock':22 's':2A,18 'see':4A 'songwriter':20 'the':14 'who':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'indie', 'alternative', 'belgian', 'rock']
                                        'tag_date'  
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1637330381.9641078  (2021-11-19 14:59:41)
                             'size'  7626136