======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '204'
                                          'artist'  'Parliament'
                                     'text_people'  ''
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                                           'title'  'Up for the Down Stroke'
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 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
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                                      'lastfmtags'  "['p funk', 'soul', 'drjazzmrfunkmusic', '70s', 'psychedelic soul', 'funk']"
                                     'discogstags'  "['funk / soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '10'
                                            'date'  '1984'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '93'
                                             'key'  '4A'
                                        'acoustid'  '56fce646-078f-4e1f-9306-b09fe9a62ea7'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '93'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDOR' (Original release time)                      '1984'
'TDRC' (Recording time)                             '1984'
'TIT2' (Title/songname/content description)         'Up for the Down Stroke'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Parliament'
'TPE2' (Band/orchestra/accompaniment)               'Parliament'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'PolyGram'
'TRCK' (Track number/Position in set)               '1/10'
'TSO2'                                              'Parliament'
'TSOP' (Performer sort order)                       'Parliament'
'TXXX:ASIN'                                         'B000001F8S'
'TXXX:Acoustid Id'                                  '56fce646-078f-4e1f-9306-b09fe9a62ea7'
'TXXX:Artists'                                      'Parliament'
'TXXX:BARCODE'                                      '042282263728'
'TXXX:CATALOGNUMBER'                                '822 637-2'
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'TXXX:MusicBrainz Album Id'                         '2d62c43c-1aec-4b82-a530-8cc8ae47315c'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'd1947987-9614-49ae-bd36-8000e6b6f7d0'
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'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'funk / soul'
'TXXX:lastfmtags'                                   ['p funk', 'soul', 'drjazzmrfunkmusic', '70s', 'psychedelic soul', 'funk']
'TXXX:originalyear'                                 '1984'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.22 dB'
'TXXX:replaygain_track_peak'                        '0.609315'
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========================== row from database ==========================
                                              'id'  791380
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/Parliament/[1984] Greatest Hits/Parliament - Up For the Down Stroke - 01.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  204
                                           'genre'  funk or soul-funk
                                        'filesize'  4905029
                                           'mtime'  1620665488
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul [1984] For 01 funk soul funk
                                      'tag_artist'  Parliament
                                     'tag_release'  Parliament's Greatest Hits
                                       'tag_title'  Up for the Down Stroke
                                             'bpm'  93.0
                                    'search_title'  'down':4 'for':2 'stroke':5 'the':3 'up':1
                                   'search_artist'  'parliament':1
                                  'search_release'  'greatest':4 'hits':5 'parliament':1 'parliaments':3 's':2
                                     'search_rest'  '1984':4,5 'for':6 'funk':2 'soul':3 'swing':1
                                    'search_combo'  '1984':15,16 'down':4A 'for':2A,17 'funk':13 'greatest':10C 'hits':11C 'parliament':6B,7C 'parliaments':9C 's':8C 'soul':14 'stroke':5A 'swing':12 'the':3A 'up':1A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  4A
                                           '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-4', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['p funk', 'soul', 'drjazzmrfunkmusic', '70s', 'psychedelic soul', 'funk']
                                        'tag_date'  1984
                                     'discogstags'  ['funk / soul']

============================== file details ==============================
                                           'mtime'  1620665487.59506  (2021-05-10 18:51:27)
                             'size'  4905029