======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '43'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'Space Oddity'
                                           'title'  "Don't Sit Down"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  "['rock', 'classic rock', 'space rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '141.512'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Space Oddity'
'TBPM' (BPM (beats per minute))                     '141.512'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         "Don't Sit Down"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TRCK' (Track number/Position in set)               '3'
'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'                                  ['rock', 'classic rock', 'space rock']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.51 dB'
'TXXX:replaygain_track_peak'                        '0.721709'

========================== row from database ==========================
                                              'id'  1501763
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/David Bowie/David Bowie - 1969 - Space Oddity/MBZ;#David Bowie;#Space Oddity;#1990-00-00;#03;#Don_t Sit Down.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  43
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  689695
                                           'mtime'  1623430281
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1969 MBZ;#David Bowie;#Space Oddity;#1990 00 00;#03;#Don_t ifs songwriter eos
                                      'tag_artist'  David Bowie
                                     'tag_release'  Space Oddity
                                       'tag_title'  Don't Sit Down
                                             'bpm'  141.512
                                    'search_title'  'don':1 'dont':3 'down':5 'sit':4 't':2
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'oddity':2 'space':1
                                     'search_rest'  '00':17,18,22 '00singer':1 '03':19,23 '1969':4 '1990':14,16 'bowie':9,11 'david':6,8 'don':20,24 'eos':3 'ifs':26 'mbz':5,7 'oddity':13,15 'songwriter':2 'space':10,12 't':21,25
                                    'search_combo'  '00':26,27,31 '00singer':10 '03':28,32 '1969':13 '1990':23,25 'bowie':7B,18,20 'david':6B,15,17 'don':1A,29,33 'dont':3A 'down':5A 'eos':12 'ifs':35 'mbz':14,16 'oddity':9C,22,24 'sit':4A 'songwriter':11 'space':8C,19,21 't':2A,30,34
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8B
                                           '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-3', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1990
                                     'discogstags'  ['rock', 'classic rock', 'space rock']

============================== file details ==============================
                                           'mtime'  1623430281.3988845  (2021-06-11 18:51:21)
                             'size'  689695