======================== unified (from filesystem) ========================
                                         'bitrate'  '296.648'
                                        'duration'  '140'
                                          'artist'  'Duck Sauce'
                                     'text_people'  ''
                                         'release'  'Barbara Streisand'
                                           'title'  'Barbara Streisand (UK Radio Edit)'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'house', 'funky', 'electronic', 'disco house']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '127.927'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Barbara Streisand'
'TBPM' (BPM (beats per minute))                     '127.927'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Barbara Streisand (UK Radio Edit)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Duck Sauce'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'house', 'funky', 'electronic', 'disco house']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.49 dB'
'TXXX:replaygain_track_peak'                        '0.364724'

========================== row from database ==========================
                                              'id'  1407177
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/duck sauce/Duck Sauce - Barbara Streisand (CDM) [V0]/01 - Barbara Streisand (UK Radio Edit).mp3
                                         'working'  None
                                         'bitrate'  296
                                    'duration_sec'  140
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5217665
                                           'mtime'  1621695907
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat duck sauce (CDM) [V0] 01 electronic generic or radio dance
                                      'tag_artist'  Duck Sauce
                                     'tag_release'  Barbara Streisand
                                       'tag_title'  Barbara Streisand (UK Radio Edit)
                                             'bpm'  127.927
                                    'search_title'  'barbara':1 'edit':6,7 'radio':5 'streisand':2 'uk':3,4
                                   'search_artist'  'duck':1 'sauce':2
                                  'search_release'  'barbara':1 'streisand':2
                                     'search_rest'  '00poprockelectronic':1 'cdm':7,8 'dance':3 'duck':5 'electronic':11 'generic':2 'or':12 'radio':13 'sauce':6 'trapbeat':4 'v0':9,10
                                    'search_combo'  '00poprockelectronic':12 'barbara':1A,10C 'cdm':18,19 'dance':14 'duck':8B,16 'edit':6A,7A 'electronic':22 'generic':13 'or':23 'radio':5A,24 'sauce':9B,17 'streisand':2A,11C 'trapbeat':15 'uk':3A,4A 'v0':20,21
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'funky', 'electronic', 'disco house']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621695906.696654  (2021-05-22 17:05:06)
                             'size'  5217665