======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '141'
                                          'artist'  'The Bonzo Dog Band'
                                     'text_people'  ''
                                         'release'  'Tadpoles'
                                           'title'  "I'm the Urban Spaceman"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-UNU-2', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['eccentric', 'jazz', 'comedy', 'psychedelic', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'entertaining-eccentric'
                                             'bpm'  '89.453'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tadpoles'
'TBPM' (BPM (beats per minute))                     '89.453'
'TCON' (Content type, a.k.a. Genre)                 'entertaining-eccentric'
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         "I'm the Urban Spaceman"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Bonzo Dog Band'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['eccentric', 'jazz', 'comedy', 'psychedelic', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.53 dB'
'TXXX:replaygain_track_peak'                        '0.644045'

========================== row from database ==========================
                                              'id'  1502697
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The Bonzo Dog Band/Tadpoles/MBZ;#The Bonzo Dog Band;#Tadpoles;#06;#I_m the Urban Spaceman.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  141
                                           'genre'  entertaining-eccentric
                                        'filesize'  4541913
                                           'mtime'  1620527189
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm MBZ;#The Band;#Tadpoles;#06;#I_m entertaining eccentric
                                      'tag_artist'  The Bonzo Dog Band
                                     'tag_release'  Tadpoles
                                       'tag_title'  I'm the Urban Spaceman
                                             'bpm'  89.453
                                    'search_title'  'i':1 'im':3 'm':2 'spaceman':6 'the':4 'urban':5
                                   'search_artist'  'band':4 'bonzo':2 'dog':3 'the':1
                                  'search_release'  'tadpoles':1
                                     'search_rest'  '06':7,12 'band':5,10 'eccentric':16 'entertaining':15 'i':8,13 'm':9,14 'mbz':1,3 'tadpoles':6,11 'the':2,4
                                    'search_combo'  '06':18,23 'band':10B,16,21 'bonzo':8B 'dog':9B 'eccentric':27 'entertaining':26 'i':1A,19,24 'im':3A 'm':2A,20,25 'mbz':12,14 'spaceman':6A 'tadpoles':11C,17,22 'the':4A,7B,13,15 'urban':5A
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['eccentric', 'jazz', 'comedy', 'psychedelic', 'rock']
                                        'tag_date'  1969
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527189.0757828  (2021-05-09 04:26:29)
                             'size'  4541913