======================== unified (from filesystem) ========================
                                         'bitrate'  '134.815'
                                        'duration'  '250'
                                          'artist'  'The Postal Service'
                                     'text_people'  ''
                                         'release'  'Such Great Heights [Single]'
                                           'title'  'Such Great Heights (performed by Iron And Wine)'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'indie pop', 'alternative', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie'
                                             'bpm'  '93.8'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Such Great Heights [Single]'
'TBPM' (BPM (beats per minute))                     '93.8'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Such Great Heights (performed by Iron And Wine)'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Postal Service'
'TRCK' (Track number/Position in set)               '4'
'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'                                  'electronic'
'TXXX:lastfmtags'                                   ['indie', 'indie pop', 'alternative', 'electronic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.01 dB'
'TXXX:replaygain_track_peak'                        '0.372316'

========================== row from database ==========================
                                              'id'  1269201
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Postal Service/The Postal Service - [ All B-Sides Singles] 2003/04  - Such Great Heights (performed by Iron And Wine).mp3
                                         'working'  None
                                         'bitrate'  134
                                    'duration_sec'  250
                                           'genre'  ifs-songwriter-indie
                                        'filesize'  4234751
                                           'mtime'  1636400756
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos All B Sides Singles] 2003 04 ifs songwriter indie
                                      'tag_artist'  The Postal Service
                                     'tag_release'  Such Great Heights [Single]
                                       'tag_title'  Such Great Heights (performed by Iron And Wine)
                                             'bpm'  93.8
                                    'search_title'  'and':8 'by':6 'great':2 'heights':3 'iron':7 'performed':4,5 'such':1 'wine':9,10
                                   'search_artist'  'postal':2 'service':3 'the':1
                                  'search_release'  'great':2 'heights':3 'single':4,5 'such':1
                                     'search_rest'  '00singer':1 '2003':9 'all':4 'b':5 'eos':3 'ifs':10 'indie':11 'sides':6 'singles':7,8 'songwriter':2
                                    'search_combo'  '00singer':19 '2003':27 'all':22 'and':8A 'b':23 'by':6A 'eos':21 'great':2A,15C 'heights':3A,16C 'ifs':28 'indie':29 'iron':7A 'performed':4A,5A 'postal':12B 'service':13B 'sides':24 'single':17C,18C 'singles':25,26 'songwriter':20 'such':1A,14C 'the':11B 'wine':9A,10A
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-1', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'indie pop', 'alternative', 'electronic']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636400756.1057978  (2021-11-08 20:45:56)
                             'size'  4234751