======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '247'
                                          'artist'  'McKay'
                                     'text_people'  ''
                                         'release'  'Best of Trip Hop 4'
                                           'title'  'Thadius Star'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', "
 "'q-busy-3', 'q-grit-2', 'q-play-3', 'Q-OLDST-3', 'q-chart-2', 'q-drums-4', "
 "'q-other-1', 'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['soul', 'rnb', 'reggae', 'female vocalists', 'sistas']"
                                     'discogstags'  "['trance', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '101.564'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Best of Trip Hop 4'
'TBPM' (BPM (beats per minute))                     '101.564'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Thadius Star'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'McKay'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['trance', 'electronic']
'TXXX:lastfmtags'                                   ['soul', 'rnb', 'reggae', 'female vocalists', 'sistas']
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.18 dB'
'TXXX:replaygain_track_peak'                        '0.565001'

========================== row from database ==========================
                                              'id'  1323692
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Best of Trip Hop Vol. 1-4/Best of Trip Hop Vol.4 Presents by Maege/04_Album_16_.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  247
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  5951534
                                           'mtime'  1636910301
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip Vol. 1 Vol.4 Presents by Maege 04_Album_16_ electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  McKay
                                     'tag_release'  Best of Trip Hop 4
                                       'tag_title'  Thadius Star
                                             'bpm'  101.564
                                    'search_title'  'star':2 'thadius':1
                                   'search_artist'  'kay':3 'mc':2 'mckay':1
                                  'search_release'  '4':5 'best':1 'hop':4 'of':2 'trip':3
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 '04':12 '1':5 '16':14 '4':7 'acid':20 'album':13 'by':10 'downtempo':19 'electronic':15 'hop':17 'jazz':21 'maege':11 'or':18 'presents':9 'trip':16 'vol':3,4,6 'vol4':8
                                    'search_combo'  '00poprockelectronic':11 '00trip':12 '04':22 '1':15 '16':24 '4':10C,17 'acid':30 'album':23 'best':6C 'by':20 'downtempo':29 'electronic':25 'hop':9C,27 'jazz':31 'kay':5B 'maege':21 'mc':4B 'mckay':3B 'of':7C 'or':28 'presents':19 'star':2A 'thadius':1A 'trip':8C,26 'vol':13,14,16 'vol4':18
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', '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'  ['soul', 'rnb', 'reggae', 'female vocalists', 'sistas']
                                        'tag_date'  2003
                                     'discogstags'  ['trance', 'electronic']

============================== file details ==============================
                                           'mtime'  1636910300.9632614  (2021-11-14 18:18:20)
                             'size'  5951534