======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '256'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'ChangesTwoBowie'
                                           'title'  'Starman'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  ("['electronic', 'jazz', 'rock', 'new wave', 'glam', 'pop rock', 'classic "
 "rock', 'disco']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '100.157'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'ChangesTwoBowie'
'TBPM' (BPM (beats per minute))                     '100.157'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Starman'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic',
 'jazz',
 'rock',
 'new wave',
 'glam',
 'pop rock',
 'classic rock',
 'disco']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.49 dB'
'TXXX:replaygain_track_peak'                        '0.637022'

========================== row from database ==========================
                                              'id'  186605
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/David Bowie - 1993 - The Singles Collection/1993 - The Singles Collection - Cd 1/03 - Starman.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  256
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  4099587
                                           'mtime'  1623430286
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1993 The Singles Collection 1993 The Singles Collection Cd 1 03 ifs songwriter eos
                                      'tag_artist'  David Bowie
                                     'tag_release'  ChangesTwoBowie
                                       'tag_title'  Starman
                                             'bpm'  100.157
                                    'search_title'  'starman':1
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'bowie':4 'changes':2 'changestwobowie':1 'two':3
                                     'search_rest'  '00singer':1 '1':9 '1993':4 'cd':8 'collection':7 'eos':3 'ifs':10 'singles':6 'songwriter':2 'the':5
                                    'search_combo'  '00singer':8 '1':16 '1993':11 'bowie':3B,7C 'cd':15 'changes':5C 'changestwobowie':4C 'collection':14 'david':2B 'eos':10 'ifs':17 'singles':13 'songwriter':9 'starman':1A 'the':12 'two':6C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1993
                                     'discogstags'  ['electronic', 'jazz', 'rock', 'new wave', 'glam', 'pop rock', 'classic rock', 'disco']

============================== file details ==============================
                                           'mtime'  1623430286.2162015  (2021-06-11 18:51:26)
                             'size'  4099587