======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '127'
                                          'artist'  'Art Lund'
                                     'text_people'  ''
                                         'release'  'US-Billboard-Charts'
                                           'title'  'Philadelphia, U.S.A'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['billboard', 'spotify', 'all', 'jazz', 'under 2000 listeners']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '95.664'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-478 POS 89'
'COMM:ID3v1 Comment:XXX'                            '58-478 POS 89'
'TALB' (Album/Movie/Show title)                     'US-Billboard-Charts'
'TBPM' (BPM (beats per minute))                     '95.664'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Philadelphia, U.S.A'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Art Lund'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['billboard', 'spotify', 'all', 'jazz', 'under 2000 listeners']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.354906'

========================== row from database ==========================
                                              'id'  1440095
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-478 - Art Lund - Philadelphia, U.S.A..mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  127
                                           'genre'  prerock-unsorted
                                        'filesize'  5098816
                                           'mtime'  1620387775
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 478 U.S.A. prerock unsorted
                                      'tag_artist'  Art Lund
                                     'tag_release'  US-Billboard-Charts
                                       'tag_title'  Philadelphia, U.S.A
                                             'bpm'  95.664
                                    'search_title'  'a':5 'philadelphia':1,2 's':4 'u':3 'usa':6
                                   'search_artist'  'art':1 'lund':2
                                  'search_release'  'billboard':2 'charts':3 'us':1 'usbillboardcharts':4
                                     'search_rest'  '00oldiepop':5 '1958':6 '478':8 '58':7 'a':11 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':13 's':10 'u':9 'unsorted':14 'usa':12
                                    'search_combo'  '00oldiepop':17 '1958':18 '478':20 '58':19 'a':5A,23 'art':7B 'billboard':10C 'charts':11C 'country':16 'exotica':14 'jazz':13 'lund':8B 'oldies':15 'philadelphia':1A,2A 'prerock':25 's':4A,22 'u':3A,21 'unsorted':26 'us':9C 'usa':6A,24 'usbillboardcharts':12C
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['billboard', 'spotify', 'all', 'jazz', 'under 2000 listeners']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387774.6486363  (2021-05-07 13:42:54)
                             'size'  5098816