======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '334'
                                          'artist'  'Nightmares on Wax'
                                     'text_people'  ''
                                         'release'  'Best of Trip Hop 2'
                                           'title'  '70s 80s'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['lounge', 'downtempo', 'trip hop', 'chillout', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '86.957'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Best of Trip Hop 2'
'TBPM' (BPM (beats per minute))                     '86.957'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         '70s 80s'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nightmares on Wax'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '9'
'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'                                   ['lounge', 'downtempo', 'trip hop', 'chillout', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.55 dB'
'TXXX:replaygain_track_peak'                        '0.747327'

========================== row from database ==========================
                                              'id'  1331117
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Best of Trip Hop Vol. 1-4/Best of Trip Hop Vol.2 Presents by Maege/06_Track.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  334
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  8041748
                                           'mtime'  1636910295
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip Vol. 1 4 Vol.2 Presents by Maege 06_Track electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Nightmares on Wax
                                     'tag_release'  Best of Trip Hop 2
                                       'tag_title'  70s 80s
                                             'bpm'  86.957
                                    'search_title'  '70s':1 '80s':2
                                   'search_artist'  'nightmares':1 'on':2 'wax':3
                                  'search_release'  '2':5 'best':1 'hop':4 'of':2 'trip':3
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 '06':13 '1':5 '2':8 '4':6 'acid':20 'by':11 'downtempo':19 'electronic':15 'hop':17 'jazz':21 'maege':12 'or':18 'presents':10 'track':14 'trip':16 'vol':3,4,7 'vol2':9
                                    'search_combo'  '00poprockelectronic':11 '00trip':12 '06':23 '1':15 '2':10C,18 '4':16 '70s':1A '80s':2A 'acid':30 'best':6C 'by':21 'downtempo':29 'electronic':25 'hop':9C,27 'jazz':31 'maege':22 'nightmares':3B 'of':7C 'on':4B 'or':28 'presents':20 'track':24 'trip':8C,26 'vol':13,14,17 'vol2':19 'wax':5B
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-4', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['lounge', 'downtempo', 'trip hop', 'chillout', 'electronic']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636910294.9258065  (2021-11-14 18:18:14)
                             'size'  8041748