======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '238'
                                          'artist'  'Johnny Cash'
                                     'text_people'  ''
                                         'release'  'Complete Live At San Quentin'
                                           'title'  'A Boy Named Sue'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwritergdchill', 'cover', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '18'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '100.755'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 0000055F 00000538 000051E0 00005DD9 0001C36D 0001C36D 00007B59 00008000 '
 '00011160 0001CA3B')
'TALB' (Album/Movie/Show title)                     'Complete Live At San Quentin'
'TBPM' (BPM (beats per minute))                     '100.755'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'A Boy Named Sue'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TPE2' (Band/orchestra/accompaniment)               'Johnny Cash'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '11/18'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.87 dB'
'TXXX:replaygain_track_peak'                        '0.632942'

========================== row from database ==========================
                                              'id'  1291838
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/johny cash - johnny cash - a boy named sue.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  238
                                           'genre'  ifs-songwriter
                                        'filesize'  3853992
                                           'mtime'  1637330775
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] johny cash johnny cash boy named sue ifs songwriter
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  Complete Live At San Quentin
                                       'tag_title'  A Boy Named Sue
                                             'bpm'  100.755
                                    'search_title'  'a':1 'boy':2 'named':3 'sue':4
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  'at':3 'complete':1 'live':2 'quentin':5 'san':4
                                     'search_rest'  '00poprockelectronic':1 'boy':10 'cash':8 'files':5,6 'ifs':13 'johnny':9 'johny':7 'loose':3,4 'named':11 'songwriter':14 'sue':12 'unsorted':2
                                    'search_combo'  '00poprockelectronic':12 'a':1A 'at':9C 'boy':2A,21 'cash':6B,19 'complete':7C 'files':16,17 'ifs':24 'johnny':5B,20 'johny':18 'live':8C 'loose':14,15 'named':3A,22 'quentin':11C 'san':10C 'songwriter':25 'sue':4A,23 'unsorted':13
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1637330775.3766167  (2021-11-19 15:06:15)
                             'size'  3853992