======================== unified (from filesystem) ========================
                                         'bitrate'  '129.834'
                                        'duration'  '165'
                                          'artist'  'Joe L.'
                                     'text_people'  ''
                                         'release'  'Dimitri - Soul'
                                           'title'  'Let Me Know'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                     'discogstags'  "['funk / soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '92.2'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dimitri - Soul'
'TBPM' (BPM (beats per minute))                     '92.2'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TIT2' (Title/songname/content description)         'Let Me Know'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Joe L.'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'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:discogstags'                                  'funk / soul'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.57 dB'
'TXXX:replaygain_track_peak'                        '0.535853'
'TXXX:youtube'                                      'piwgMlNf9i0'

========================== row from database ==========================
                                              'id'  1514648
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/Soul/Joe L. - Let Me Know (7_ Vinyl HQ)-piwgMlNf9i0.mp3
                                         'working'  None
                                         'bitrate'  129
                                    'duration_sec'  165
                                           'genre'  funk or soul
                                        'filesize'  2683335
                                           'mtime'  1628357632
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm (7_ Vinyl HQ) piwgMlNf9i0 funk or soul
                                      'tag_artist'  Joe L.
                                     'tag_release'  Dimitri - Soul
                                       'tag_title'  Let Me Know
                                             'bpm'  92.2
                                    'search_title'  'know':3 'let':1 'me':2
                                   'search_artist'  'joe':1 'l':2,3
                                  'search_release'  'dimitri':1 'soul':2
                                     'search_rest'  '7':1,2 'funk':7 'hq':4,5 'ml':11 'nf9i0':12 'or':8 'piwg':10 'piwgmlnf9i0':6 'soul':9 'vinyl':3
                                    'search_combo'  '7':9,10 'dimitri':7C 'funk':15 'hq':12,13 'joe':4B 'know':3A 'l':5B,6B 'let':1A 'me':2A 'ml':19 'nf9i0':20 'or':16 'piwg':18 'piwgmlnf9i0':14 'soul':8C,17 'vinyl':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-2', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['funk / soul']

============================== file details ==============================
                                           'mtime'  1628357631.961265  (2021-08-07 19:33:51)
                             'size'  2683335