======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '190'
                                          'artist'  'Brother to Brother'
                                     'text_people'  ''
                                         'release'  'baad assss soul 1'
                                           'title'  'In the bottle'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', "
 "'q-busy-3', 'q-grit-2', 'q-play-3', 'Q-OLDST-2', 'q-chart-2', 'q-drums-3', "
 "'q-other-2', 'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['funk', '7soul', 'soul', 'mod', 'alabama']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '006'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '118.2'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'baad assss soul 1'
'TBPM' (BPM (beats per minute))                     '118.2'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         'In the bottle'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Brother to Brother'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '006'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['funk', '7soul', 'soul', 'mod', 'alabama']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.47 dB'
'TXXX:replaygain_track_peak'                        '0.474443'

========================== row from database ==========================
                                              'id'  1113855
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/baad asssss soul 1/006 Brother to Brother - In the bottle(1974).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  190
                                           'genre'  funk or soul
                                        'filesize'  3044501
                                           'mtime'  1628357902
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk asssss 006 bottle(1974) funk or
                                      'tag_artist'  Brother to Brother
                                     'tag_release'  baad assss soul 1
                                       'tag_title'  In the bottle
                                             'bpm'  118.2
                                    'search_title'  'bottle':3 'in':1 'the':2
                                   'search_artist'  'brother':1 'to':2
                                  'search_release'  '1':4 'assss':2 'baad':1 'soul':3
                                     'search_rest'  '1974':5 'asssss':3 'bottle':4 'bottle1974':6 'funk':2 'or':7 'swing':1
                                    'search_combo'  '1':9C '1974':14 'assss':7C 'asssss':12 'baad':6C 'bottle':3A,13 'bottle1974':15 'brother':4B 'funk':11 'in':1A 'or':16 'soul':8C 'swing':10 'the':2A 'to':5B
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funk', '7soul', 'soul', 'mod', 'alabama']
                                        'tag_date'  1974
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357902.4184873  (2021-08-07 19:38:22)
                             'size'  3044501