======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '217'
                                          'artist'  'Ukulele Orchestra of Great Britian'
                                     'text_people'  ''
                                         'release'  'Anarchy in the Ukulele'
                                           'title'  'Life on Mars'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'q-syn-2', "
 "'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-1', "
 "'q-other-3', 'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['ukulele', 'folk', 'british', 'cover', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-unsorted'
                                             'bpm'  '121.119'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         ['0',
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 '0002F4BC 0002F4BC',
 ' 00000000 00000210 00000768 0000000000925608 00000000 0042518D 00000000 '
 '00000000 00000000 00000000 00000000 00000000']
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunNORM:eng'                                 (' 000014CF 000014CF 00009B5A 00009B5A 0002BB23 0002BB23 00008000 00008000 '
 '00001EA8 00001EA8')
'COMM:iTunes_CDDB_1:eng'                            '2A04B005+90191+5+150+22978+39074+59283+75593'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '4'
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'TALB' (Album/Movie/Show title)                     'Anarchy in the Ukulele'
'TBPM' (BPM (beats per minute))                     '121.119'
'TCON' (Content type, a.k.a. Genre)                 'ifs-unsorted'
'TENC' (Encoded by)                                 'iTunes v7.3.0.54'
'TIT2' (Title/songname/content description)         'Life on Mars'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ukulele Orchestra of Great Britian'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['ukulele', 'folk', 'british', 'cover', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.09 dB'
'TXXX:replaygain_track_peak'                        '0.333556'

========================== row from database ==========================
                                              'id'  1317987
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/04 life on mars(2).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  217
                                           'genre'  ifs-unsorted
                                        'filesize'  4352640
                                           'mtime'  1620572568
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 04 life mars(2) ifs unsorted
                                      'tag_artist'  Ukulele Orchestra of Great Britian
                                     'tag_release'  Anarchy in the Ukulele
                                       'tag_title'  Life on Mars
                                             'bpm'  121.119
                                    'search_title'  'life':1 'mars':3 'on':2
                                   'search_artist'  'britian':5 'great':4 'of':3 'orchestra':2 'ukulele':1
                                  'search_release'  'anarchy':1 'in':2 'the':3 'ukulele':4
                                     'search_rest'  '00poprockelectronic':1 '2':9 'files':5,6 'ifs':11 'life':7 'loose':3,4 'mars':8 'mars2':10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':13 '2':21 'anarchy':9C 'britian':8B 'files':17,18 'great':7B 'ifs':23 'in':10C 'life':1A,19 'loose':15,16 'mars':3A,20 'mars2':22 'of':6B 'on':2A 'orchestra':5B 'the':11C 'ukulele':4B,12C 'unsorted':14
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['ukulele', 'folk', 'british', 'cover', 'pop']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572567.9094803  (2021-05-09 17:02:47)
                             'size'  4352640