======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '197'
                                          'artist'  'Zapp'
                                     'text_people'  ''
                                         'release'  'VI Back by Dope Demand'
                                           'title'  'Zapp is Back'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-3', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'electro', 'p funk', 'soul', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '86.070'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 000016A5 00000D14 0001430D 00'
'COMM:iTunNORM:eng'                                 (' 000016A5 00000D14 0001430D 00013441 0001F2DD 0002ED91 00008000 00008000 '
 '0000002E 0000002E')
'TALB' (Album/Movie/Show title)                     'VI Back by Dope Demand'
'TBPM' (BPM (beats per minute))                     '86.070'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Zapp is Back'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Zapp'
'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:lastfmtags'                                   ['80s', 'electro', 'p funk', 'soul', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.32 dB'
'TXXX:replaygain_track_peak'                        '0.605972'

========================== row from database ==========================
                                              'id'  1333130
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/zapp - zapp is back.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  197
                                           'genre'  funk or soul
                                        'filesize'  4739744
                                           'mtime'  1628357709
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] zapp zapp back funk or soul
                                      'tag_artist'  Zapp
                                     'tag_release'  VI Back by Dope Demand
                                       'tag_title'  Zapp is Back
                                             'bpm'  86.07
                                    'search_title'  'back':3 'is':2 'zapp':1
                                   'search_artist'  'zapp':1
                                  'search_release'  'back':2 'by':3 'demand':5 'dope':4 'vi':1
                                     'search_rest'  '00poprockelectronic':1 'back':8 'files':5,6 'funk':9 'loose':3,4 'or':10 'soul':11 'unsorted':2 'zapp':7
                                    'search_combo'  '00poprockelectronic':10 'back':3A,6C,17 'by':7C 'demand':9C 'dope':8C 'files':14,15 'funk':18 'is':2A 'loose':12,13 'or':19 'soul':20 'unsorted':11 'vi':5C 'zapp':1A,4B,16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'electro', 'p funk', 'soul', 'funk']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357709.203494  (2021-08-07 19:35:09)
                             'size'  4739744