======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '165'
                                          'artist'  'Bill Haley and his Comets'
                                     'text_people'  ''
                                         'release'  'Brunswick 82869'
                                           'title'  'Burn That Candle'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rockabilly', 'rock and roll', 'rock n roll', 'oldies', '50s']"
                                     'discogstags'  "['rock & roll', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '92.985'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Brunswick 82869'
'TBPM' (BPM (beats per minute))                     '92.985'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Burn That Candle'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Haley and his Comets'
'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:discogstags'                                  ['rock & roll', 'rock']
'TXXX:lastfmtags'                                   ['rockabilly', 'rock and roll', 'rock n roll', 'oldies', '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'                        '+2.04 dB'
'TXXX:replaygain_track_peak'                        '0.397423'

========================== row from database ==========================
                                              'id'  1426968
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1955/Bill Haley and his Comets - Burn That Candle 12-11-1955.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  165
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  3313481
                                           'mtime'  1622659459
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1955 12 11 1955 rock pop early rocknroll
                                      'tag_artist'  Bill Haley and his Comets
                                     'tag_release'  Brunswick 82869
                                       'tag_title'  Burn That Candle
                                             'bpm'  92.985
                                    'search_title'  'burn':1 'candle':3 'that':2
                                   'search_artist'  'and':3 'bill':1 'comets':5 'haley':2 'his':4
                                  'search_release'  '82869':2 'brunswick':1
                                     'search_rest'  '00oldiepop':5 '1955':6 'country':4 'early':9 'exotica':2 'jazz':1 'oldies':3 'pop':8 'rock':7 'rocknroll':10
                                    'search_combo'  '00oldiepop':15 '1955':16 '82869':10C 'and':6B 'bill':4B 'brunswick':9C 'burn':1A 'candle':3A 'comets':8B 'country':14 'early':19 'exotica':12 'haley':5B 'his':7B 'jazz':11 'oldies':13 'pop':18 'rock':17 'rocknroll':20 'that':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           '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'  ['rockabilly', 'rock and roll', 'rock n roll', 'oldies', '50s']
                                        'tag_date'  1955
                                     'discogstags'  ['rock & roll', 'rock']

============================== file details ==============================
                                           'mtime'  1622659459.4615  (2021-06-02 20:44:19)
                             'size'  3313481