======================== unified (from filesystem) ========================
                                         'bitrate'  '215.136'
                                        'duration'  '284'
                                          'artist'  'Underworld'
                                     'text_people'  ''
                                         'release'  'Oblivion with Bells'
                                           'title'  'Faxed Invitation'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'dance', 'techno', 'electronic', 'trance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno;electronic-th-trance'
                                             'bpm'  '120.042'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Oblivion with Bells'
'TBPM' (BPM (beats per minute))                     '120.042'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-th-techno', 'electronic-th-trance']
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Faxed Invitation'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Underworld'
'TRCK' (Track number/Position in set)               '9'
'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'                                   ['electronica', 'dance', 'techno', 'electronic', 'trance']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.31 dB'
'TXXX:replaygain_track_peak'                        '0.708661'

========================== row from database ==========================
                                              'id'  1338217
                                            'path'  /data/Music/Bulk/00poprockelectronic/Underworld/Oblivion with Bells/Underworld - Oblivion with Bells - 09 - Faxed Invitation.mp3
                                         'working'  None
                                         'bitrate'  215
                                    'duration_sec'  284
                                           'genre'  electronic-th-techno;electronic-th-trance
                                        'filesize'  7657290
                                           'mtime'  1620572460
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 09 electronic techno;electronic trance
                                      'tag_artist'  Underworld
                                     'tag_release'  Oblivion with Bells
                                       'tag_title'  Faxed Invitation
                                             'bpm'  120.042
                                    'search_title'  'faxed':1 'invitation':2
                                   'search_artist'  'underworld':1
                                  'search_release'  'bells':3 'oblivion':1 'with':2
                                     'search_rest'  '00poprockelectronic':1 'electronic':2,4,6 'techno':3,5 'trance':7
                                    'search_combo'  '00poprockelectronic':7 'bells':6C 'electronic':8,10,12 'faxed':1A 'invitation':2A 'oblivion':4C 'techno':9,11 'trance':13 'underworld':3B 'with':5C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'dance', 'techno', 'electronic', 'trance']
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572460.1836712  (2021-05-09 17:01:00)
                             'size'  7657290