======================== unified (from filesystem) ========================
                                         'bitrate'  '191.968'
                                        'duration'  '158'
                                          'artist'  'Exch Pop True'
                                     'text_people'  ''
                                         'release'  '100% Números 1 2004 (disc 1)'
                                           'title'  'La Discoteca'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-3']")
                                      'lastfmtags'  "['bm', 'makes me bounce', 'durty', 'sexy sexy', 'schnubbel']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '123.784'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100% Números 1 2004 (disc 1)'
'TBPM' (BPM (beats per minute))                     '123.784'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'La Discoteca'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Exch Pop True'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['bm', 'makes me bounce', 'durty', 'sexy sexy', 'schnubbel']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.67 dB'
'TXXX:replaygain_track_peak'                        '0.386728'

========================== row from database ==========================
                                              'id'  1296437
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Exch Pop True - 100!25 Números 1 2004 (Disc 1) - 12 - La Discoteca.mp3
                                         'working'  None
                                         'bitrate'  191
                                    'duration_sec'  158
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  3811671
                                           'mtime'  1620572802
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 100!25 (Disc 12 electronic generic or radio dance
                                      'tag_artist'  Exch Pop True
                                     'tag_release'  100% Números 1 2004 (disc 1)
                                       'tag_title'  La Discoteca
                                             'bpm'  123.784
                                    'search_title'  'discoteca':2 'la':1
                                   'search_artist'  'exch':1 'pop':2 'true':3
                                  'search_release'  '1':4,8 '100':1 '2004':5 'disc':6,7 'numeros':2,3
                                     'search_rest'  '00poprockelectronic':1 '100':7 '25':8 'dance':15 'disc':9,10 'electronic':11 'files':5,6 'generic':12 'loose':3,4 'or':13 'radio':14 'unsorted':2
                                    'search_combo'  '00poprockelectronic':14 '1':9C,13C '100':6C,20 '2004':10C '25':21 'dance':28 'disc':11C,12C,22,23 'discoteca':2A 'electronic':24 'exch':3B 'files':18,19 'generic':25 'la':1A 'loose':16,17 'numeros':7C,8C 'or':26 'pop':4B 'radio':27 'true':5B 'unsorted':15
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['bm', 'makes me bounce', 'durty', 'sexy sexy', 'schnubbel']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572801.875533  (2021-05-09 17:06:41)
                             'size'  3811671