======================== unified (from filesystem) ========================
                                         'bitrate'  '174.61'
                                        'duration'  '305'
                                          'artist'  'Maps and Diagrams'
                                     'text_people'  ''
                                         'release'  'Perspect'
                                           'title'  'Guida'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'glitch', 'idm', 'ambient', 'deepspaceone', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '116.3'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Perspect'
'TBPM' (BPM (beats per minute))                     '116.3'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Guida'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Maps and Diagrams'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronica', 'glitch', 'idm', 'ambient', 'deepspaceone', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.05 dB'
'TXXX:replaygain_track_peak'                        '0.897541'

========================== row from database ==========================
                                              'id'  1314814
                                            'path'  /data/Music/Bulk/00poprockelectronic/00calmer/Maps and Diagrams/Perspect/01 - Guida.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  305
                                           'genre'  electronic
                                        'filesize'  6662108
                                           'mtime'  1636913191
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00calmer 01 electronic
                                      'tag_artist'  Maps and Diagrams
                                     'tag_release'  Perspect
                                       'tag_title'  Guida
                                             'bpm'  116.3
                                    'search_title'  'guida':1
                                   'search_artist'  'and':2 'diagrams':3 'maps':1
                                  'search_release'  'perspect':1
                                     'search_rest'  '00calmer':2 '00poprockelectronic':1 'electronic':3
                                    'search_combo'  '00calmer':7 '00poprockelectronic':6 'and':3B 'diagrams':4B 'electronic':8 'guida':1A 'maps':2B 'perspect':5C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'glitch', 'idm', 'ambient', 'deepspaceone', 'electronic']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636913191.018026  (2021-11-14 19:06:31)
                             'size'  6662108