======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '140'
                                          'artist'  'The Living End'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Rip It Up'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-UNU-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['punk rock', 'punk', 'australian', 'rockabilly', 'rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '90.291'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '90.291'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Rip It Up'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Living End'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['punk rock', 'punk', 'australian', 'rockabilly', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.20 dB'
'TXXX:replaygain_track_peak'                        '0.792592'

========================== row from database ==========================
                                              'id'  1361542
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Living End/MBZ;#The Living End;#[non-album tracks];#01;#Rip It Up.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  140
                                           'genre'  rock-gr-punk
                                        'filesize'  2246298
                                           'mtime'  1636912535
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#The End;#[non album tracks];#01;#Rip rock gr punk
                                      'tag_artist'  The Living End
                                     'tag_release'  None
                                       'tag_title'  Rip It Up
                                             'bpm'  90.291
                                    'search_title'  'it':2 'rip':1 'up':3
                                   'search_artist'  'end':3 'living':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '01':12,15 'album':10 'end':6,8 'gr':18 'mbz':2,4 'non':7,9 'punk':19 'rip':13,16 'rock':17 'the':3,5 'tracks':11,14
                                    'search_combo'  '00poprockelectronic':7 '01':18,21 'album':16 'end':6B,12,14 'gr':24 'it':2A 'living':5B 'mbz':8,10 'non':13,15 'punk':25 'rip':1A,19,22 'rock':23 'the':4B,9,11 'tracks':17,20 'up':3A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['punk rock', 'punk', 'australian', 'rockabilly', 'rock']
                                        'tag_date'  2000
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636912534.5757346  (2021-11-14 18:55:34)
                             'size'  2246298