======================== unified (from filesystem) ========================
                                         'bitrate'  '200.099'
                                        'duration'  '233'
                                          'artist'  'Aquarian Dream'
                                     'text_people'  ''
                                         'release'  'Easy Instr 70s'
                                           'title'  'East 6th Street'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['funk', 'soul', 'disco', 'groove', 'jazz funk']"
                                     'discogstags'  "['house', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '122.4'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 000001D4 000002BF 00000EDF 00001974 000277D6 000277A1 0000517E 00004FE0 '
 '0001013E 000300C6')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000970 00000000009D3A00 00000000 00591EA0 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Easy Instr 70s'
'TBPM' (BPM (beats per minute))                     '122.4'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TENC' (Encoded by)                                 'iTunes v7.6.1'
'TIT2' (Title/songname/content description)         'East 6th Street'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Aquarian Dream'
'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:discogstags'                                  ['house', 'electronic']
'TXXX:lastfmtags'                                   ['funk', 'soul', 'disco', 'groove', 'jazz funk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.02 dB'
'TXXX:replaygain_track_peak'                        '0.632171'

========================== row from database ==========================
                                              'id'  1523487
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Aquarian Dream - East 6th Street.mp3
                                         'working'  None
                                         'bitrate'  200
                                    'duration_sec'  233
                                           'genre'  funk or soul
                                        'filesize'  5848868
                                           'mtime'  1628357793
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY 70_s funk or soul
                                      'tag_artist'  Aquarian Dream
                                     'tag_release'  Easy Instr 70s
                                       'tag_title'  East 6th Street
                                             'bpm'  122.4
                                    'search_title'  '6th':2 'east':1 'street':3
                                   'search_artist'  'aquarian':1 'dream':2
                                  'search_release'  '70s':3 'easy':1 'instr':2
                                     'search_rest'  '70':5 'easy':4 'funk':2 'or':7 's':6 'soul':3 'swing':1
                                    'search_combo'  '6th':2A '70':13 '70s':8C 'aquarian':4B 'dream':5B 'east':1A 'easy':6C,12 'funk':10 'instr':7C 'or':15 's':14 'soul':11 'street':3A 'swing':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           '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-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'soul', 'disco', 'groove', 'jazz funk']
                                        'tag_date'  1975
                                     'discogstags'  ['house', 'electronic']

============================== file details ==============================
                                           'mtime'  1628357793.4660633  (2021-08-07 19:36:33)
                             'size'  5848868