======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '245'
                                          'artist'  'The Dubliners'
                                     'text_people'  ''
                                         'release'  '40 years'
                                           'title'  'The Irish Rover'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', 'Q-OLDST-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['traditional', 'irish folk', 'irish', 'celtic', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'ifs-unsorted'
                                             'bpm'  '140.628'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     '40 years'
'TBPM' (BPM (beats per minute))                     '140.628'
'TCON' (Content type, a.k.a. Genre)                 'ifs-unsorted'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'The Irish Rover'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Dubliners'
'TRCK' (Track number/Position in set)               '20'
'TXXX:FMPS_Rating'                                  '0.4'
'TXXX:MP3GAIN_MINMAX'                               '053,186'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['traditional', 'irish folk', 'irish', 'celtic', 'folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.94 dB'
'TXXX:replaygain_track_peak'                        '0.557160'

========================== row from database ==========================
                                              'id'  1330293
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/The Dubliners__MBZ;#The Dubliners;#40 years;#20;#The Irish Rover.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  245
                                           'genre'  ifs-unsorted
                                        'filesize'  3985342
                                           'mtime'  1620573018
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Dubliners__MBZ;#The Dubliners;#40 years;#20;#The ifs unsorted
                                      'tag_artist'  The Dubliners
                                     'tag_release'  40 years
                                       'tag_title'  The Irish Rover
                                             'bpm'  140.628
                                    'search_title'  'irish':2 'rover':3 'the':1
                                   'search_artist'  'dubliners':2 'the':1
                                  'search_release'  '40':1 'years':2
                                     'search_rest'  '00poprockelectronic':1 '20':18,21 '40':14,16 'dubliners':7,10,13,15 'files':5,6 'ifs':23 'loose':3,4 'mbz':8,11 'the':9,12,19,22 'unsorted':2 'years':17,20
                                    'search_combo'  '00poprockelectronic':8 '20':25,28 '40':6C,21,23 'dubliners':5B,14,17,20,22 'files':12,13 'ifs':30 'irish':2A 'loose':10,11 'mbz':15,18 'rover':3A 'the':1A,4B,16,19,26,29 'unsorted':9 'years':7C,24,27
                                    'tag_tracknum'  20
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['traditional', 'irish folk', 'irish', 'celtic', 'folk']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573018.1561394  (2021-05-09 17:10:18)
                             'size'  3985342