======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '156'
                                          'artist'  'Bill Haley & His Comets'
                                     'text_people'  ''
                                         'release'  'The Decca Years Disc 2'
                                           'title'  'Forty Cups Of Coffee'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
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 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'rock', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '366'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '136.736'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'The Decca Years Disc 2'
'TBPM' (BPM (beats per minute))                     '136.736'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Forty Cups Of Coffee'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Haley & His Comets'
'TRCK' (Track number/Position in set)               '366'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'rock', '50s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.63 dB'
'TXXX:replaygain_track_peak'                        '0.416811'

========================== row from database ==========================
                                              'id'  1431671
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-366 - Bill Haley & His Comets - Forty Cups Of Coffee.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  156
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  6285232
                                           'mtime'  1622659475
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 366 rock pop early rocknroll
                                      'tag_artist'  Bill Haley & His Comets
                                     'tag_release'  The Decca Years Disc 2
                                       'tag_title'  Forty Cups Of Coffee
                                             'bpm'  136.736
                                    'search_title'  'coffee':4 'cups':2 'forty':1 'of':3
                                   'search_artist'  'bill':1 'comets':4 'haley':2 'his':3
                                  'search_release'  '2':5 'decca':2 'disc':4 'the':1 'years':3
                                     'search_rest'  '00oldiepop':5 '1957':6 '366':8 '57':7 'country':4 'early':11 'exotica':2 'jazz':1 'oldies':3 'pop':10 'rock':9 'rocknroll':12
                                    'search_combo'  '00oldiepop':18 '1957':19 '2':13C '366':21 '57':20 'bill':5B 'coffee':4A 'comets':8B 'country':17 'cups':2A 'decca':10C 'disc':12C 'early':24 'exotica':15 'forty':1A 'haley':6B 'his':7B 'jazz':14 'of':3A 'oldies':16 'pop':23 'rock':22 'rocknroll':25 'the':9C 'years':11C
                                    'tag_tracknum'  366
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'rock', '50s']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659475.283103  (2021-06-02 20:44:35)
                             'size'  6285232