======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '164'
                                          'artist'  'CBM 64'
                                     'text_people'  ''
                                         'release'  'Contactdisk 2'
                                           'title'  'Onderbreking'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'q-syn-3', 'q-bass-1', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-2', 'q-drums-1', 'q-other-4', "
 "'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['minimal synth', 'stichting stopcontact', 'contactdisc']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '127.8'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Contactdisk 2'
'TBPM' (BPM (beats per minute))                     '127.8'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TIT2' (Title/songname/content description)         'Onderbreking'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Moog Spaceport Lounge'
'TPE2' (Band/orchestra/accompaniment)               'CBM 64'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['minimal synth', 'stichting stopcontact', 'contactdisc']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.00 dB'
'TXXX:replaygain_track_peak'                        '0.445017'

========================== row from database ==========================
                                              'id'  695516
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/vol 2/06 cbm - onderbreking.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  164
                                           'genre'  electronic-experimental
                                        'filesize'  2635608
                                           'mtime'  1636917419
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm vol 06 cbm onderbreking electronic experimental
                                      'tag_artist'  CBM 64
                                     'tag_release'  Contactdisk 2
                                       'tag_title'  Onderbreking
                                             'bpm'  127.8
                                    'search_title'  'onderbreking':1
                                   'search_artist'  '64':2 'cbm':1
                                  'search_release'  '2':2 'contactdisk':1
                                     'search_rest'  'cbm':2 'electronic':4 'experimental':5 'onderbreking':3 'vol':1
                                    'search_combo'  '2':5C '64':3B 'cbm':2B,7 'contactdisk':4C 'electronic':9 'experimental':10 'onderbreking':1A,8 'vol':6
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['minimal synth', 'stichting stopcontact', 'contactdisc']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636917418.5084057  (2021-11-14 20:16:58)
                             'size'  2635608