======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '235'
                                          'artist'  'U2'
                                     'text_people'  ''
                                         'release'  'plastictango tango'
                                           'title'  'Numb (Gimme Some More Dignity Mix) [edited]'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-4', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['irish', 'classic rock', 'alternative', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '90.090'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            ' 0000043A 0000053D 00007ADD 00'
'COMM:iTunNORM:eng'                                 (' 0000043A 0000053D 00007ADD 0000A9C1 0004D882 0004D882 00008C25 00008949 '
 '0004B6F0 0004B6D6')
'COMM:iTunes_CDDB_IDs:eng'                          '14+87AE2F868682F0F29FFEE00AF5EFC538+2473791'
'TALB' (Album/Movie/Show title)                     'plastictango tango'
'TBPM' (BPM (beats per minute))                     '90.090'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDRC' (Recording time)                             '1995'
'TENC' (Encoded by)                                 'iTunes v4.6'
'TIT2' (Title/songname/content description)         'Numb (Gimme Some More Dignity Mix) [edited]'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'U2'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['irish', 'classic rock', 'alternative', 'pop', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.69 dB'
'TXXX:replaygain_track_peak'                        '0.607049'

========================== row from database ==========================
                                              'id'  235924
                                            'path'  /data/Music/Bulk/00localcharacter/plastictango/tango/tango 3.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  235
                                           'genre'  rock-pop
                                        'filesize'  5648215
                                           'mtime'  1620386016
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 3 rock pop
                                      'tag_artist'  U2
                                     'tag_release'  plastictango tango
                                       'tag_title'  Numb (Gimme Some More Dignity Mix) [edited]
                                             'bpm'  90.09
                                    'search_title'  'dignity':6 'edited':9,10 'gimme':2,3 'mix':7,8 'more':5 'numb':1 'some':4
                                   'search_artist'  'u2':1
                                  'search_release'  'plastictango':1 'tango':2
                                     'search_rest'  '3':1 'pop':3 'rock':2
                                    'search_combo'  '3':14 'dignity':6A 'edited':9A,10A 'gimme':2A,3A 'mix':7A,8A 'more':5A 'numb':1A 'plastictango':12C 'pop':16 'rock':15 'some':4A 'tango':13C 'u2':11B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['irish', 'classic rock', 'alternative', 'pop', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620386016.1096883  (2021-05-07 13:13:36)
                             'size'  5648215