======================== unified (from filesystem) ========================
                                         'bitrate'  '235.074'
                                        'duration'  '498'
                                          'artist'  'Kettel'
                                     'text_people'  ''
                                         'release'  'Through Friendly Waters'
                                           'title'  'Mwoeb'
                                           'quals'  "['q-bass-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '9'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'im-electronic'
                                             'bpm'  '96.0'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Through Friendly Waters'
'TBPM' (BPM (beats per minute))                     '96.0'
'TCON' (Content type, a.k.a. Genre)                 'im-electronic'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Mwoeb'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Kettel'
'TRCK' (Track number/Position in set)               '8/9'
'TXXX:ITunes_CDDB_IDs'                              '9+2484AE020513F214E963BA95D0E7DFCD+5019161'
'TXXX:MP3GAIN_MINMAX'                               '132,208'
'TXXX:MP3GAIN_UNDO'                                 '+002,+002,N'
'TXXX:Tempo'                                        '00000 BPM'
'TXXX:Tool'                                         'iTunes v4.7.0.42, QuickTime 6.5.2'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.63 dB'
'TXXX:replaygain_track_peak'                        '0.545020'

========================== row from database ==========================
                                              'id'  1537151
                                            'path'  /data/Music/Other/F3/Kettel/08-kettel-mwoeb-elu.mp3
                                         'working'  None
                                         'bitrate'  235
                                    'duration_sec'  498
                                           'genre'  im-electronic
                                        'filesize'  14655963
                                           'mtime'  1662800139
                                   'redo_metaread'  0
                                        'rest_str'   F3 08 kettel mwoeb elu im electronic
                                      'tag_artist'  Kettel
                                     'tag_release'  Through Friendly Waters
                                       'tag_title'  Mwoeb
                                             'bpm'  96.0
                                    'search_title'  'mwoeb':1
                                   'search_artist'  'kettel':1
                                  'search_release'  'friendly':2 'through':1 'waters':3
                                     'search_rest'  'electronic':6 'elu':4 'f3':1 'im':5 'kettel':2 'mwoeb':3
                                    'search_combo'  'electronic':11 'elu':9 'f3':6 'friendly':4C 'im':10 'kettel':2B,7 'mwoeb':1A,8 'through':3C 'waters':5C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['q-bass-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800139.4741127  (2022-09-10 10:55:39)
                             'size'  14655963