======================== unified (from filesystem) ========================
                                         'bitrate'  '230.527'
                                        'duration'  '229'
                                          'artist'  'Christina Aguilera'
                                     'text_people'  ''
                                         'release'  'Stripped'
                                           'title'  'Cruz'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dance', 'rnb', 'female vocalists', 'soul', 'pop']"
                                     'discogstags'  "['hip hop', 'rock', 'rnb/swing', 'pop rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '20'
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '140.238'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Stripped'
'TBPM' (BPM (beats per minute))                     '140.238'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2002-10-28'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'Cruz'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Christina Aguilera'
'TPE2' (Band/orchestra/accompaniment)               'Christina Aguilera'
'TPUB' (Publisher)                                  'RCA Records'
'TRCK' (Track number/Position in set)               '13/20'
'TSOP' (Performer sort order)                       'Aguilera, Christina'
'TSRC' (ISRC (international standard recording code))  'USRC10201069'
'TXXX:ALBUMARTISTSORT'                              'Aguilera, Christina'
'TXXX:BARCODE'                                      '743219612526'
'TXXX:CATALOGNUMBER'                                '7432 196125 2'
'TXXX:MusicBrainz Album Artist Id'                  'b202beb7-99bd-47e7-8b72-195c8d72ebdd'
'TXXX:MusicBrainz Album Id'                         '6a0c6963-683e-4275-bebb-0279092ee772'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'b202beb7-99bd-47e7-8b72-195c8d72ebdd'
'TXXX:MusicIP PUID'                                 '33343c94-7445-6499-4746-e3ea364cb567'
'TXXX:MusicMagic Data'                              'AgEAAww7luqWAOUAhtbDNktagAGCPoXg6gWfK0LdqFf62IABmn389q85pgfEsprSg7KAAQJMlbTzoOq1hELdiQvM/rq8+t+wg/2AAaeUl3DHUYYq63A9rItNgxiHjOZLn6VDzalI9CKQd4j79WWwd6wQ0c6lIYpohX76Ap0M81P4OI/y4kMDIQR/xWHdlYfRgOM='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:added_timestamp'                              '128930990202923527'
'TXXX:discogstags'                                  ['hip hop', 'rock', 'rnb/swing', 'pop rap']
'TXXX:involved people'                              'producer'
'TXXX:lastfmtags'                                   ['dance', 'rnb', 'female vocalists', 'soul', 'pop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+9.73 dB'
'TXXX:replaygain_track_peak'                        '0.118022'

========================== row from database ==========================
                                              'id'  1337062
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/13 Christina Aguilera - Cruz.mp3
                                         'working'  None
                                         'bitrate'  230
                                    'duration_sec'  229
                                           'genre'  electronic-unsorted
                                        'filesize'  6622003
                                           'mtime'  1621696737
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 13 electronic unsorted
                                      'tag_artist'  Christina Aguilera
                                     'tag_release'  Stripped
                                       'tag_title'  Cruz
                                             'bpm'  140.238
                                    'search_title'  'cruz':1
                                   'search_artist'  'aguilera':2 'christina':1
                                  'search_release'  'stripped':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':7 'files':5,6 'loose':3,4 'unsorted':2
                                    'search_combo'  '00poprockelectronic':5 'aguilera':3B 'christina':2B 'cruz':1A 'electronic':11 'files':9,10 'loose':7,8 'stripped':4C 'unsorted':6
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'rnb', 'female vocalists', 'soul', 'pop']
                                        'tag_date'  2002
                                     'discogstags'  ['hip hop', 'rock', 'rnb/swing', 'pop rap']

============================== file details ==============================
                                           'mtime'  1621696737.041601  (2021-05-22 17:18:57)
                             'size'  6622003