======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '157'
                                          'artist'  'Apollo 100'
                                     'text_people'  ''
                                         'release'  'Joy'
                                           'title'  "Mendelssohn's 4th (First Movement) ('72)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['instrumental', 'rock', 'classic rock', 'pop', '70s']"
                                     'discogstags'  "['rock', 'parody', 'experimental', 'symphonic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '11'
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '138.9'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'COMM::XXX'                                         ('Featuring Tom Parker\u2028'
 'Mega Records (LP) M31-1010\n'
 'LAME settings: 320 kbps qval=2')
'TALB' (Album/Movie/Show title)                     'Joy'
'TBPM' (BPM (beats per minute))                     '138.9'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDEN' (Encoding time)                              '2012-06-08 22:23:34'
'TDRC' (Recording time)                             '1972'
'TENC' (Encoded by)                                 'LAME 3.98 (Max 0.9.1)'
'TIT2' (Title/songname/content description)         "Mendelssohn's 4th (First Movement) ('72)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Apollo 100'
'TRCK' (Track number/Position in set)               '3/11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'parody', 'experimental', 'symphonic rock']
'TXXX:lastfmtags'                                   ['instrumental', 'rock', 'classic rock', 'pop', '70s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-4.60 dB'
'TXXX:replaygain_track_peak'                        '0.902882'

========================== row from database ==========================
                                              'id'  1530734
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Apollo 100 - Mendelssohn_s 4th (First Movement) (_72).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  157
                                           'genre'  funk or soul
                                        'filesize'  7221603
                                           'mtime'  1628357793
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s Mendelssohn_s (_72) funk or soul
                                      'tag_artist'  Apollo 100
                                     'tag_release'  Joy
                                       'tag_title'  Mendelssohn's 4th (First Movement) ('72)
                                             'bpm'  138.9
                                    'search_title'  '4th':4 '72':9,10 'first':5,6 'mendelssohn':1 'mendelssohns':3 'movement':7,8 's':2
                                   'search_artist'  '100':2 'apollo':1
                                  'search_release'  'joy':1
                                     'search_rest'  '70':6 '72':10,11 'easy':4 'funk':2 'instr':5 'mendelssohn':8 'or':12 's':7,9 'soul':3 'swing':1
                                    'search_combo'  '100':12B '4th':4A '70':19 '72':9A,10A,23,24 'apollo':11B 'easy':17 'first':5A,6A 'funk':15 'instr':18 'joy':13C 'mendelssohn':1A,21 'mendelssohns':3A 'movement':7A,8A 'or':25 's':2A,20,22 'soul':16 'swing':14
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'rock', 'classic rock', 'pop', '70s']
                                        'tag_date'  1972
                                     'discogstags'  ['rock', 'parody', 'experimental', 'symphonic rock']

============================== file details ==============================
                                           'mtime'  1628357793.4172962  (2021-08-07 19:36:33)
                             'size'  7221603