======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '223'
                                          'artist'  'Goldfrapp'
                                     'text_people'  ''
                                         'release'  'Head First'
                                           'title'  'Believer'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'sexy', 'female vocalists', 'electronic', 'electronica']"
                                     'discogstags'  "['electronic', 'pop', 'electro', 'synth-pop', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz;electronic-unsorted'
                                             'bpm'  '100.5'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Head First'
'TBPM' (BPM (beats per minute))                     '100.5'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-trip hop or downtempo or acid jazz', 'electronic-unsorted']
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Believer'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Goldfrapp'
'TRCK' (Track number/Position in set)               '2'
'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:discogstags'                                  ['electronic', 'pop', 'electro', 'synth-pop', 'disco']
'TXXX:lastfmtags'                                   ['dance', 'sexy', 'female vocalists', 'electronic', 'electronica']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.02 dB'
'TXXX:replaygain_track_peak'                        '0.412458'

========================== row from database ==========================
                                              'id'  1310775
                                            'path'  /data/Music/Bulk/00poprockelectronic/Goldfrapp/Head First/02 - Goldfrapp - Believer.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  223
                                           'genre'  electronic-trip hop or downtempo or acid jazz;electronic-unsorted
                                        'filesize'  8935924
                                           'mtime'  1636911276
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 02 electronic trip hop or downtempo or acid jazz;electronic unsorted
                                      'tag_artist'  Goldfrapp
                                     'tag_release'  Head First
                                       'tag_title'  Believer
                                             'bpm'  100.5
                                    'search_title'  'believer':1
                                   'search_artist'  'goldfrapp':1
                                  'search_release'  'first':2 'head':1
                                     'search_rest'  '00poprockelectronic':1 'acid':7 'downtempo':6 'electronic':2,9,11 'hop':4 'jazz':8,10 'or':5 'trip':3 'unsorted':12
                                    'search_combo'  '00poprockelectronic':5 'acid':11 'believer':1A 'downtempo':10 'electronic':6,13,15 'first':4C 'goldfrapp':2B 'head':3C 'hop':8 'jazz':12,14 'or':9 'trip':7 'unsorted':16
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  7A
                                           '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-3', 'q-syn-3', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'sexy', 'female vocalists', 'electronic', 'electronica']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic', 'pop', 'electro', 'synth-pop', 'disco']

============================== file details ==============================
                                           'mtime'  1636911275.8626676  (2021-11-14 18:34:35)
                             'size'  8935924