======================== unified (from filesystem) ========================
                                         'bitrate'  '148.158'
                                        'duration'  '638'
                                          'artist'  'Jan Swerts'
                                     'text_people'  ''
                                         'release'  'Weg'
                                           'title'  'Bayostraat 42/44'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'Q-PIANO-3', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['electronic', 'classical', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '135.004'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Weg'
'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Bayostraat 42/44'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jan Swerts'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'classical', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.94 dB'
'TXXX:replaygain_track_peak'                        '0.661708'

========================== row from database ==========================
                                              'id'  1293887
                                            'path'  /data/Music/Bulk/00instruments-classical/Jan Swerts - Weg (2010)/JanSwerts-Weg-04-Bayostraat4244.mp3
                                         'working'  None
                                         'bitrate'  148
                                    'duration_sec'  638
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  11837476
                                           'mtime'  1620561589
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical (2010) JanSwerts 04 Bayostraat4244 prerock classical or classical instruments
                                      'tag_artist'  Jan Swerts
                                     'tag_release'  Weg
                                       'tag_title'  Bayostraat 42/44
                                             'bpm'  135.004
                                    'search_title'  '42':2 '4244':4 '44':3 'bayostraat':1
                                   'search_artist'  'jan':1 'swerts':2
                                  'search_release'  'weg':1
                                     'search_rest'  '00instruments':1 '2010':3,4 'bayostraat4244':6 'classical':2 'instruments':9 'jan':10 'janswerts':5 'or':8 'prerock':7 'swerts':11
                                    'search_combo'  '00instruments':8 '2010':10,11 '42':2A '4244':4A '44':3A 'bayostraat':1A 'bayostraat4244':13 'classical':9 'instruments':16 'jan':5B,17 'janswerts':12 'or':15 'prerock':14 'swerts':6B,18 'weg':7C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  2010
                                     'discogstags'  ['electronic', 'classical', 'ambient']

============================== file details ==============================
                                           'mtime'  1620561588.7746704  (2021-05-09 13:59:48)
                             'size'  11837476