======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '286'
                                          'artist'  'Earth, Wind & Fire'
                                     'text_people'  ''
                                         'release'  'Funky16Corners Blog'
                                           'title'  'bad tune (funk)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-3', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rnb', '70s', 'soul', 'funk', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '93.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Funky16Corners Blog'
'TBPM' (BPM (beats per minute))                     '93.6'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'bad tune (funk)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Earth, Wind & Fire'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rnb', '70s', 'soul', 'funk', 'disco']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.88 dB'
'TXXX:replaygain_track_peak'                        '0.502065'

========================== row from database ==========================
                                              'id'  1526487
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Earth, Wind & Fire - bad tune (funk).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  286
                                           'genre'  funk or soul
                                        'filesize'  6877956
                                           'mtime'  1628357818
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing soul EASY Instr 70_s soul
                                      'tag_artist'  Earth, Wind & Fire
                                     'tag_release'  Funky16Corners Blog
                                       'tag_title'  bad tune (funk)
                                             'bpm'  93.6
                                    'search_title'  'bad':1 'funk':3,4 'tune':2
                                   'search_artist'  'earth':1,2 'fire':4 'wind':3
                                  'search_release'  'blog':2 'funky16corners':1
                                     'search_rest'  '70':5 'easy':3 'instr':4 's':6 'soul':2 'swing':1
                                    'search_combo'  '70':15 'bad':1A 'blog':10C 'earth':5B,6B 'easy':13 'fire':8B 'funk':3A,4A 'funky16corners':9C 'instr':14 's':16 'soul':12 'swing':11 'tune':2A 'wind':7B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rnb', '70s', 'soul', 'funk', 'disco']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357817.516413  (2021-08-07 19:36:57)
                             'size'  6877956