======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '110'
                                          'artist'  'Jerry Lee Lewis'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Great Balls of Fire'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  ("['oldies', 'rock n roll', 'rock and roll', 'rockabilly', '50s', 'classic "
 "rock']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '36'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex'
                                             'bpm'  '108.008'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1'
'TBPM' (BPM (beats per minute))                     '108.008'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex']
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Great Balls of Fire'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jerry Lee Lewis'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '36'
'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', '50s', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'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'                        '+1.89 dB'
'TXXX:replaygain_track_peak'                        '0.447702'

========================== row from database ==========================
                                              'id'  1295388
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/036 - Jerry Lee Lewis - Great Balls of Fire.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  110
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex
                                        'filesize'  1767907
                                           'mtime'  1620737053
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 036 electronic generic or radio unsorted;rock cppex
                                      'tag_artist'  Jerry Lee Lewis
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Great Balls of Fire
                                             'bpm'  108.008
                                    'search_title'  'balls':2 'fire':4 'great':1 'of':3
                                   'search_artist'  'jerry':1 'lee':2 'lewis':3
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'cppex':11 'electronic':3 'generic':4 'or':5 'radio':6 'rock':8,10 'top100':2 'unsorted':7,9
                                    'search_combo'  '00poprockelectronic':14 '1':13C 'balls':2A 'billboard':8C 'cppex':24 'electronic':16 'fire':4A 'generic':17 'great':1A 'jerry':5B 'lee':6B 'lewis':7B 'of':3A,12C 'or':18 'pop':10C 'radio':19 'rock':21,23 'singles':11C 'top':9C 'top100':15 'unsorted':20,22
                                    'tag_tracknum'  36
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', '50s', 'classic rock']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737052.5019026  (2021-05-11 14:44:12)
                             'size'  1767907