======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '217'
                                          'artist'  'Dick Hyman'
                                     'text_people'  ''
                                         'release'  'Easy Instr 70s'
                                           'title'  'Alfred the King of Disco'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['moog', 'jazz', 'lounge', 'space age pop', 'piano', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '130.8'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM:Checksum:XXX'                                 'AG# 72BEF435'
'COMM:iTunNORM:eng'                                 (' 00000172 000002F5 000006D0 0000113D 00029827 0001D505 00004261 00004AFE '
 '00029827 0001D505')
'TALB' (Album/Movie/Show title)                     'Easy Instr 70s'
'TBPM' (BPM (beats per minute))                     '130.8'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Alfred the King of Disco'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dick Hyman'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.82.02, LAME dll 3.93, 192 Kbit/s, Stereo, Normal quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['moog', 'jazz', 'lounge', 'space age pop', 'piano', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.60 dB'
'TXXX:replaygain_track_peak'                        '0.829199'

========================== row from database ==========================
                                              'id'  1526968
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Dick Hyman - Alfred the King of Disco.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  217
                                           'genre'  funk or soul
                                        'filesize'  5213926
                                           'mtime'  1628357815
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY 70_s funk or soul
                                      'tag_artist'  Dick Hyman
                                     'tag_release'  Easy Instr 70s
                                       'tag_title'  Alfred the King of Disco
                                             'bpm'  130.8
                                    'search_title'  'alfred':1 'disco':5 'king':3 'of':4 'the':2
                                   'search_artist'  'dick':1 'hyman':2
                                  'search_release'  '70s':3 'easy':1 'instr':2
                                     'search_rest'  '70':5 'easy':4 'funk':2 'or':7 's':6 'soul':3 'swing':1
                                    'search_combo'  '70':15 '70s':10C 'alfred':1A 'dick':6B 'disco':5A 'easy':8C,14 'funk':12 'hyman':7B 'instr':9C 'king':3A 'of':4A 'or':17 's':16 'soul':13 'swing':11 'the':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['moog', 'jazz', 'lounge', 'space age pop', 'piano', 'electronic']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357814.7235105  (2021-08-07 19:36:54)
                             'size'  5213926