======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '318'
                                          'artist'  'Frank Zappa'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Bolero'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ('ifs-songwriter-experimental;set-pl-shirleyspinoza;set-pl-mor;set-cover or '
 'covered')
                                             'bpm'  '137.8'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '137.8'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-experimental',
 'set-pl-shirleyspinoza',
 'set-pl-mor',
 'set-cover or covered']
'TIT2' (Title/songname/content description)         'Bolero'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Frank Zappa'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'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'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.69 dB'
'TXXX:replaygain_track_peak'                        '0.601360'

========================== row from database ==========================
                                              'id'  1304711
                                            'path'  /data/Music/Bulk/00poprockelectronic/Frank Zappa/The Best Band You Never Heard In Your Life/08 - Bolero (live).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  318
                                           'genre'  ifs-songwriter-experimental;set-pl-shirleyspinoza;set-pl-mor;set-cover or covered
                                        'filesize'  5094728
                                           'mtime'  1636400749
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic The Best Band You Never Heard In Your Life 08 (live) ifs songwriter experimental;set pl shirleyspinoza;set pl mor;set cover or covered
                                      'tag_artist'  Frank Zappa
                                     'tag_release'  None
                                       'tag_title'  Bolero
                                             'bpm'  137.8
                                    'search_title'  'bolero':1
                                   'search_artist'  'frank':1 'zappa':2
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'band':4 'best':3 'cover':28 'covered':30 'experimental':15,17 'heard':7 'ifs':13 'in':8 'life':10 'live':11,12 'mor':24,26 'never':6 'or':29 'pl':19 'set':16,18,21,23,25,27 'shirleyspinoza':20,22 'songwriter':14 'the':2 'you':5 'your':9
                                    'search_combo'  '00poprockelectronic':4 'band':7 'best':6 'bolero':1A 'cover':31 'covered':33 'experimental':18,20 'frank':2B 'heard':10 'ifs':16 'in':11 'life':13 'live':14,15 'mor':27,29 'never':9 'or':32 'pl':22 'set':19,21,24,26,28,30 'shirleyspinoza':23,25 'songwriter':17 'the':5 'you':8 'your':12 'zappa':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400749.1068017  (2021-11-08 20:45:49)
                             'size'  5094728