======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '185'
                                          'artist'  'Charles Wright & the Watts 103'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1970'
                                           'title'  'L'
                                           'quals'  ("['Q-JZFKS-3', 'Q-OLDST-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['funk', 'soul', 'jazz', 'los angeles']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '50'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '98.262'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1970'
'TBPM' (BPM (beats per minute))                     '98.262'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'L'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Charles Wright & the Watts 103'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '50'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['funk', 'soul', 'jazz', 'los angeles']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.36 dB'
'TXXX:replaygain_track_peak'                        '0.430756'

========================== row from database ==========================
                                              'id'  1325315
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1970/050 - Charles Wright & the Watts 103rd Street Rhythm Band - L.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  185
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3706941
                                           'mtime'  1620384949
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 050 103rd Street Rhythm Band electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Charles Wright & the Watts 103
                                     'tag_release'  Billboard Top Pop Singles of 1970
                                       'tag_title'  L
                                             'bpm'  98.262
                                    'search_title'  'l':1
                                   'search_artist'  '103':5 'charles':1 'the':3 'watts':4 'wright':2
                                  'search_release'  '1970':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '103rd':3 'band':6 'billboard':16 'electronic':7 'generic':8 'or':9 'pl':15 'radio':10 'rhythm':5 'set':12,14 'street':4 'top100':2 'unsorted':11,13
                                    'search_combo'  '00poprockelectronic':13 '103':6B '103rd':15 '1970':12C 'band':18 'billboard':7C,28 'charles':2B 'electronic':19 'generic':20 'l':1A 'of':11C 'or':21 'pl':27 'pop':9C 'radio':22 'rhythm':17 'set':24,26 'singles':10C 'street':16 'the':4B 'top':8C 'top100':14 'unsorted':23,25 'watts':5B 'wright':3B
                                    'tag_tracknum'  50
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'soul', 'jazz', 'los angeles']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620384949.3307886  (2021-05-07 12:55:49)
                             'size'  3706941