======================== unified (from filesystem) ========================
                                         'bitrate'  '170.277'
                                        'duration'  '217'
                                          'artist'  'Eagles'
                                     'text_people'  ''
                                         'release'  'The Best Of'
                                           'title'  'Desperado'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'Q-PLAY-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-2', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'soft rock', 'rock', '70s', 'classic rock']"
                                     'discogstags'  "['soft rock', 'country rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'rock-pop-soft'
                                             'bpm'  '118.7'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Best Of'
'TBPM' (BPM (beats per minute))                     '118.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-soft'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Desperado'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eagles'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['soft rock', 'country rock', 'rock']
'TXXX:lastfmtags'                                   ['country', 'soft rock', 'rock', '70s', 'classic rock']
'TXXX:original release date'                        ['1985', '1980']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.65 dB'
'TXXX:replaygain_track_peak'                        '0.471818'

========================== row from database ==========================
                                              'id'  1385259
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/05 - Desperado.mp3
                                         'working'  None
                                         'bitrate'  170
                                    'duration_sec'  217
                                           'genre'  rock-pop-soft
                                        'filesize'  4624098
                                           'mtime'  1620736573
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 05 rock pop soft
                                      'tag_artist'  Eagles
                                     'tag_release'  The Best Of
                                       'tag_title'  Desperado
                                             'bpm'  118.7
                                    'search_title'  'desperado':1
                                   'search_artist'  'eagles':1
                                  'search_release'  'best':2 'of':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'loose':3,4 'pop':8 'rock':7 'soft':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'best':4C 'desperado':1A 'eagles':2B 'files':10,11 'loose':8,9 'of':5C 'pop':13 'rock':12 'soft':14 'the':3C 'unsorted':7
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['country', 'soft rock', 'rock', '70s', 'classic rock']
                                        'tag_date'  1980
                                     'discogstags'  ['soft rock', 'country rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620736573.4126775  (2021-05-11 14:36:13)
                             'size'  4624098