======================== unified (from filesystem) ========================
                                         'bitrate'  '201.038'
                                        'duration'  '327'
                                          'artist'  'One Star'
                                     'text_people'  ''
                                         'release'  'Non-Mainstream Music Sampler 4'
                                           'title'  'Optonica'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  ("['electronic', 'indie pop', 'l8', 'lesser known yet streamable artists', "
 "'fun food factory']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '108.587'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Non-Mainstream Music Sampler 4'
'TBPM' (BPM (beats per minute))                     '108.587'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes v4.6.0.15'
'TIT2' (Title/songname/content description)         'Optonica'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'One Star'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronic',
 'indie pop',
 'l8',
 'lesser known yet streamable artists',
 'fun food factory']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.67 dB'
'TXXX:replaygain_track_peak'                        '0.529370'

========================== row from database ==========================
                                              'id'  456956
                                            'path'  /data/Music/Bulk/00localcharacter/Non-Mainstream Music Sampler 4/One Star - Optonica.mp3
                                         'working'  None
                                         'bitrate'  201
                                    'duration_sec'  327
                                           'genre'  loc-unsorted
                                        'filesize'  8219920
                                           'mtime'  1620401244
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter loc unsorted
                                      'tag_artist'  One Star
                                     'tag_release'  Non-Mainstream Music Sampler 4
                                       'tag_title'  Optonica
                                             'bpm'  108.587
                                    'search_title'  'optonica':1
                                   'search_artist'  'one':1 'star':2
                                  'search_release'  '4':6 'mainstream':2 'music':4 'non':1 'nonmainstream':3 'sampler':5
                                     'search_rest'  'loc':1 'unsorted':2
                                    'search_combo'  '4':9C 'loc':10 'mainstream':5C 'music':7C 'non':4C 'nonmainstream':6C 'one':2B 'optonica':1A 'sampler':8C 'star':3B 'unsorted':11
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'indie pop', 'l8', 'lesser known yet streamable artists', 'fun food factory']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620401244.4574478  (2021-05-07 17:27:24)
                             'size'  8219920