======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '191'
                                          'artist'  'Amanda Love'
                                     'text_people'  ''
                                         'release'  'American Popcorn (vol 2)'
                                           'title'  'What Did She Do'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', "
 "'q-play-3', 'Q-JZFKS-2', 'Q-OLDST-1', 'q-chart-2', 'q-drums-3', 'q-other-3', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-2']")
                                      'lastfmtags'  "['7soul']"
                                     'discogstags'  "['funk / soul', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '116.520'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'American Popcorn (vol 2)'
'TBPM' (BPM (beats per minute))                     '116.520'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'What Did She Do'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Amanda Love'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'soul']
'TXXX:lastfmtags'                                   '7soul'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.58 dB'
'TXXX:replaygain_track_peak'                        '0.485530'

========================== row from database ==========================
                                              'id'  760582
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Vol. 2/15 - Amanda Love - What Did She Do.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  191
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  4597251
                                           'mtime'  1620537158
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Vol. 15 prerock jb jazz unsorted
                                      'tag_artist'  Amanda Love
                                     'tag_release'  American Popcorn (vol 2)
                                       'tag_title'  What Did She Do
                                             'bpm'  116.52
                                    'search_title'  'did':2 'do':4 'she':3 'what':1
                                   'search_artist'  'amanda':1 'love':2
                                  'search_release'  '2':5,6 'american':1 'popcorn':2 'vol':3,4
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':8 'oldies':3 'prerock':7 'unsorted':9 'vol':5,6
                                    'search_combo'  '2':11C,12C 'amanda':5B 'american':7C 'country':16 'did':2A 'do':4A 'exotica':14 'jazz':13 'jb':20 'love':6B 'oldies':15 'popcorn':8C 'prerock':19 'she':3A 'unsorted':21 'vol':9C,10C,17,18 'what':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['7soul']
                                        'tag_date'  1955
                                     'discogstags'  ['funk / soul', 'soul']

============================== file details ==============================
                                           'mtime'  1620537158.4524546  (2021-05-09 07:12:38)
                             'size'  4597251