======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '185'
                                          'artist'  'Amon Düül II'
                                     'text_people'  ''
                                         'release'  'Made in Germany'
                                           'title'  'Ludwig'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['krautrock', 'experimental', 'progressive rock', 'psychedelic rock', "
 "'psychedelic']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '12'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '145.5'
                                             'key'  '10A'
                                        'acoustid'  '64a52d6f-2e28-43cf-9ca5-26c276d52cc8'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Made in Germany'
'TBPM' (BPM (beats per minute))                     '145.5'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDOR' (Original release time)                      '1975'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Ludwig'
'TKEY' (Initial key)                                '10A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Amon Düül II'
'TPE2' (Band/orchestra/accompaniment)               'Amon Düül II'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Castle Communications/Castle Legends'
'TRCK' (Track number/Position in set)               '2/12'
'TSO2'                                              'Amon Düül II'
'TSOP' (Performer sort order)                       'Amon Düül II'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, LAME dll 3.96, 320 Kbit/s, Joint Stereo, Normal quality'
'TXXX:Acoustid Id'                                  '64a52d6f-2e28-43cf-9ca5-26c276d52cc8'
'TXXX:BARCODE'                                      '4010946501925'
'TXXX:CATALOGNUMBER'                                '374 05019/CLC 5019'
'TXXX:MusicBrainz Album Artist Id'                  '9d78c6da-a415-4e1d-a55d-5e37b3bbc65d'
'TXXX:MusicBrainz Album Id'                         'f282fbe7-0964-4a3e-bb61-d025b5938634'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '9d78c6da-a415-4e1d-a55d-5e37b3bbc65d'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['krautrock',
 'experimental',
 'progressive rock',
 'psychedelic rock',
 'psychedelic']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.49 dB'
'TXXX:replaygain_track_peak'                        '0.587868'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'c1e11d18-250b-4ed9-aeb1-af92e99c0aac')

========================== row from database ==========================
                                              'id'  1411166
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Amon Düül II - 1975 - Made in Germany/02 - Ludwig.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  185
                                           'genre'  rock-cppex-progressive
                                        'filesize'  7435461
                                           'mtime'  1620736033
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 1975 02 rock cppex progressive
                                      'tag_artist'  Amon Düül II
                                     'tag_release'  Made in Germany
                                       'tag_title'  Ludwig
                                             'bpm'  145.5
                                    'search_title'  'ludwig':1
                                   'search_artist'  'amon':1 'duul':2,3 'ii':4
                                  'search_release'  'germany':3 'in':2 'made':1
                                     'search_rest'  '1975':2 'classicprogpsy':1 'cppex':4 'progressive':5 'rock':3
                                    'search_combo'  '1975':10 'amon':2B 'classicprogpsy':9 'cppex':12 'duul':3B,4B 'germany':8C 'ii':5B 'in':7C 'ludwig':1A 'made':6C 'progressive':13 'rock':11
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['krautrock', 'experimental', 'progressive rock', 'psychedelic rock', 'psychedelic']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736032.8375218  (2021-05-11 14:27:12)
                             'size'  7435461