======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '175'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'Low'
                                           'title'  'A New Career In A New Town'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  "['electronic', 'rock', 'pop', 'experimental', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos;set-pl-sced'
                                             'bpm'  '125.782'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000003F1 00000235 000012FC 000009C0 000138AE 000186E5 00003F5A 000035B7 '
 '000186E5 000138C5')
'TALB' (Album/Movie/Show title)                     'Low'
'TBPM' (BPM (beats per minute))                     '125.782'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-eos', 'set-pl-sced']
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'A New Career In A New Town'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TRCK' (Track number/Position in set)               '7'
'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', 'rock', 'pop', 'experimental', 'ambient']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.43 dB'
'TXXX:replaygain_track_peak'                        '0.769939'

========================== row from database ==========================
                                              'id'  406196
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/[1977] Low/07 A New Career In A New Town.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  175
                                           'genre'  ifs-songwriter-eos;set-pl-sced
                                        'filesize'  3045497
                                           'mtime'  1636400837
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos [1977] 07 ifs songwriter eos;set pl sced
                                      'tag_artist'  David Bowie
                                     'tag_release'  Low
                                       'tag_title'  A New Career In A New Town
                                             'bpm'  125.782
                                    'search_title'  'a':1 'career':3 'in':4 'new':2 'town':5
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'low':1
                                     'search_rest'  '00singer':1 '1977':4,5 'eos':3,7,9 'ifs':6 'pl':11 'sced':12 'set':8,10 'songwriter':2
                                    'search_combo'  '00singer':9 '1977':12,13 'a':1A 'bowie':7B 'career':3A 'david':6B 'eos':11,15,17 'ifs':14 'in':4A 'low':8C 'new':2A 'pl':19 'sced':20 'set':16,18 'songwriter':10 'town':5A
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-syn-1', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1977
                                     'discogstags'  ['electronic', 'rock', 'pop', 'experimental', 'ambient']

============================== file details ==============================
                                           'mtime'  1636400836.9627604  (2021-11-08 20:47:16)
                             'size'  3045497