======================== unified (from filesystem) ========================
                                         'bitrate'  '170.306'
                                        'duration'  '237'
                                          'artist'  'Prince'
                                     'text_people'  ''
                                         'release'  'Graffiti Bridge'
                                           'title'  'The Question Of U'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['80s', 'rock', 'pop', 'funk']"
                                     'discogstags'  ("['electronic', 'rock', 'funk / soul', 'pop', 'stage & screen', 'rnb/swing', "
 "'soundtrack', 'funk', 'pop rock', 'soul', 'pop rap']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '17'
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk-pop'
                                             'bpm'  '115.589'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'FD101011'
'COMM:ID3v1 Comment:XXX'                            'FD101011'
'TALB' (Album/Movie/Show title)                     'Graffiti Bridge'
'TBPM' (BPM (beats per minute))                     '115.589'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk-pop'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'The Question Of U'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Prince'
'TRCK' (Track number/Position in set)               '4/17'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.89, VBR 4, Stereo, High quality'
'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',
 'rock',
 'funk / soul',
 'pop',
 'stage & screen',
 'rnb/swing',
 'soundtrack',
 'funk',
 'pop rock',
 'soul',
 'pop rap']
'TXXX:lastfmtags'                                   ['80s', 'rock', 'pop', 'funk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.07 dB'
'TXXX:replaygain_track_peak'                        '0.444979'

========================== row from database ==========================
                                              'id'  794296
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Prince/Graffiti Bridge/Prince - 04 - The Question Of U.mp3
                                         'working'  None
                                         'bitrate'  170
                                    'duration_sec'  237
                                           'genre'  funk or soul-funk-pop
                                        'filesize'  5058384
                                           'mtime'  1620531274
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 04 funk or soul funk pop
                                      'tag_artist'  Prince
                                     'tag_release'  Graffiti Bridge
                                       'tag_title'  The Question Of U
                                             'bpm'  115.589
                                    'search_title'  'of':3 'question':2 'the':1 'u':4
                                   'search_artist'  'prince':1
                                  'search_release'  'bridge':2 'graffiti':1
                                     'search_rest'  'country':4 'exotica':2 'funk':5 'jazz':1 'oldies':3 'or':6 'pop':8 'soul':7
                                    'search_combo'  'bridge':7C 'country':11 'exotica':9 'funk':12 'graffiti':6C 'jazz':8 'of':3A 'oldies':10 'or':13 'pop':15 'prince':5B 'question':2A 'soul':14 'the':1A 'u':4A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['80s', 'rock', 'pop', 'funk']
                                        'tag_date'  1990
                                     'discogstags'  ['electronic', 'rock', 'funk / soul', 'pop', 'stage & screen', 'rnb/swing', 'soundtrack', 'funk', 'pop rock', 'soul', 'pop rap']

============================== file details ==============================
                                           'mtime'  1620531273.7972422  (2021-05-09 05:34:33)
                             'size'  5058384