======================== unified (from filesystem) ========================
                                         'bitrate'  '137.589'
                                        'duration'  '365'
                                          'artist'  'Johnny Hammond'
                                     'text_people'  ''
                                         'release'  'Dimitri - Ful, Soul & Jazz'
                                           'title'  "I Don't Know"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'Q-JZFKS-3', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-3', "
 "'Q-CHART-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['funk', 'jazz', 'soul', 'organ', 'hammond']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '127.3'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Ful, Soul & Jazz'
'TBPM' (BPM (beats per minute))                     '127.3'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         "I Don't Know"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Hammond'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['funk', 'jazz', 'soul', 'organ', 'hammond']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.46 dB'
'TXXX:replaygain_track_peak'                        '0.927796'

========================== row from database ==========================
                                              'id'  1513919
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/FunkSoulJazz/Johnny Hammond I Don_t Know 1978-8fhXaefS1IQ.mp3
                                         'working'  None
                                         'bitrate'  137
                                    'duration_sec'  365
                                           'genre'  funk or soul
                                        'filesize'  6294022
                                           'mtime'  1628357626
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm FunkSoulJazz Don_t 1978 8fhXaefS1IQ funk or soul
                                      'tag_artist'  Johnny Hammond
                                     'tag_release'  Dimitri - Ful, Soul & Jazz
                                       'tag_title'  I Don't Know
                                             'bpm'  127.3
                                    'search_title'  'don':2 'dont':4 'i':1 'know':5 't':3
                                   'search_artist'  'hammond':2 'johnny':1
                                  'search_release'  'dimitri':1 'ful':2,3 'jazz':5 'soul':4
                                     'search_rest'  '1978':4 '8fh':10 '8fhxaefs1iq':5 'don':2 'funk':6 'funksouljazz':1 'jazz':9 'or':7 's1iq':12 'soul':8 't':3 'xaef':11
                                    'search_combo'  '1978':16 '8fh':22 '8fhxaefs1iq':17 'dimitri':8C 'don':2A,14 'dont':4A 'ful':9C,10C 'funk':18 'funksouljazz':13 'hammond':7B 'i':1A 'jazz':12C,21 'johnny':6B 'know':5A 'or':19 's1iq':24 'soul':11C,20 't':3A,15 'xaef':23
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3']
                                      'lastfmtags'  ['funk', 'jazz', 'soul', 'organ', 'hammond']
                                        'tag_date'  1978
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357625.874916  (2021-08-07 19:33:45)
                             'size'  6294022