======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '174'
                                          'artist'  "Somethin' Smith & the Red Heads"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "It's A Sin To Tell A Lie"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '142.108'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '142.108'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         "It's A Sin To Tell A Lie"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               "Somethin' Smith & the Red Heads"
'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:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.22 dB'
'TXXX:replaygain_track_peak'                        '0.470246'

========================== row from database ==========================
                                              'id'  1508115
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1955/Somethin_ Smith & the Red Heads - It_s A Sin To Tell A Lie 1955.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  174
                                           'genre'  prerock-unsorted
                                        'filesize'  3497778
                                           'mtime'  1621698246
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1955 Somethin_ It_s 1955 prerock unsorted
                                      'tag_artist'  Somethin' Smith & the Red Heads
                                     'tag_release'  None
                                       'tag_title'  It's A Sin To Tell A Lie
                                             'bpm'  142.108
                                    'search_title'  'a':4 'it':1 'its':3 'lie':8 's':2 'sin':5 'tell':7 'to':6
                                   'search_artist'  'heads':6 'red':5 'smith':3 'somethin':1,2 'the':4
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1955':6 'country':4 'exotica':2 'it':8 'jazz':1 'oldies':3 'prerock':10 's':9 'somethin':7 'unsorted':11
                                    'search_combo'  '00oldiepop':19 '1955':20 'a':4A 'country':18 'exotica':16 'heads':14B 'it':1A,22 'its':3A 'jazz':15 'lie':8A 'oldies':17 'prerock':24 'red':13B 's':2A,23 'sin':5A 'smith':11B 'somethin':9B,10B,21 'tell':7A 'the':12B 'to':6A 'unsorted':25
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698246.362466  (2021-05-22 17:44:06)
                             'size'  3497778