======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '174'
                                          'artist'  'Oskar Joost Tanz-Orchester'
                                     'text_people'  ''
                                         'release'  'tango in europe'
                                           'title'  'Zwei Gitarren'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['orchester', 'big band', 'myhitparade', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '113.453'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'1\x008\x00+\x009\x006\x00+\x003\x003\x00E\x002\x00+\x006\x007\x005\x000\x00+\x009\x00B\x000\x005\x00+\x00D\x001\x004\x001\x00+\x001\x000\x00B\x00E\x001\x00+\x001\x003\x00D\x00E\x00F\x00+\x001\x007\x006\x006\x003\x00+\x001\x00B\x000\x000\x005\x00+\x001\x00D\x006\x00E\x001\x00+\x002\x000\x00D\x004\x00A\x00+\x002\x004\x009\x00D\x001\x00+\x002\x008\x00D\x001\x007\x00+\x002\x00C\x004\x004\x007\x00+\x002\x00F\x00E\x006\x004\x00+\x003\x003\x004\x00B\x00F\x00+\x003\x006\x00E\x007\x008\x00+\x003\x00A\x002\x00D\x007\x00+\x003\x00D\x007\x001\x00D\x00+\x004\x000\x00B\x009\x00E\x00+\x004\x003\x00C\x000\x005\x00+\x004\x007\x001\x00B\x006\x00+\x004\x00A\x007\x002\x00B\x00+\x004\x00D\x00A\x004\x00F\x00+\x005\x001\x008\x00C\x00F\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'tango in europe'
'TBPM' (BPM (beats per minute))                     '113.453'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'Zwei Gitarren'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Oskar Joost Tanz-Orchester'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['orchester', 'big band', 'myhitparade', 'oldies', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.41 dB'
'TXXX:replaygain_track_peak'                        '0.570366'

========================== row from database ==========================
                                              'id'  851064
                                            'path'  /data/Music/Bulk/00localcharacter/tango in europe (various)/Oskar Joost Orchester - Zwei Gitarren (1934).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  174
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  2796983
                                           'mtime'  1620528489
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter (various) (1934) loc style or milonga
                                      'tag_artist'  Oskar Joost Tanz-Orchester
                                     'tag_release'  tango in europe
                                       'tag_title'  Zwei Gitarren
                                             'bpm'  113.453
                                    'search_title'  'gitarren':2 'zwei':1
                                   'search_artist'  'joost':2 'orchester':4 'oskar':1 'tanz':3 'tanzorchester':5
                                  'search_release'  'europe':3 'in':2 'tango':1
                                     'search_rest'  '1934':3,4 'loc':5 'milonga':8 'or':7 'style':6 'various':1,2
                                    'search_combo'  '1934':13,14 'europe':10C 'gitarren':2A 'in':9C 'joost':4B 'loc':15 'milonga':18 'or':17 'orchester':6B 'oskar':3B 'style':16 'tango':8C 'tanz':5B 'tanzorchester':7B 'various':11,12 'zwei':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['orchester', 'big band', 'myhitparade', 'oldies', 'swing']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528489.2400732  (2021-05-09 04:48:09)
                             'size'  2796983