======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '189'
                                          'artist'  'The Stooges'
                                     'text_people'  ''
                                         'release'  'The Stooges'
                                           'title'  'I Wanna Be Your Dog'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['proto punk', 'punk rock', 'rock', 'punk', 'garage rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '120.830'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Stooges'
'TBPM' (BPM (beats per minute))                     '120.830'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         'I Wanna Be Your Dog'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Stooges'
'TPE2' (Band/orchestra/accompaniment)               'The Stooges'
'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'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['proto punk', 'punk rock', 'rock', 'punk', 'garage rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '3'
'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'                        '-0.30 dB'
'TXXX:replaygain_track_peak'                        '0.579636'

========================== row from database ==========================
                                              'id'  1417876
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/The Stooges - Stooges,The/1969 The Stooges/The Stooges - I Wanna Be Your Dog.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  189
                                           'genre'  rock-gr-punk
                                        'filesize'  6082517
                                           'mtime'  1622659206
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Stooges,The 1969 rock gr punk
                                      'tag_artist'  The Stooges
                                     'tag_release'  The Stooges
                                       'tag_title'  I Wanna Be Your Dog
                                             'bpm'  120.83
                                    'search_title'  'be':3 'dog':5 'i':1 'wanna':2 'your':4
                                   'search_artist'  'stooges':2 'the':1
                                  'search_release'  'stooges':2 'the':1
                                     'search_rest'  '1969':9 'garage':2 'gr':11 'punk':1 'rock':10 'stoner':4 'stooges':5,7 'surf':3 'the':6,8
                                    'search_combo'  '1969':18 'be':3A 'dog':5A 'garage':11 'gr':20 'i':1A 'punk':10 'rock':19 'stoner':13 'stooges':7B,9C,14,16 'surf':12 'the':6B,8C,15,17 'wanna':2A 'your':4A
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['proto punk', 'punk rock', 'rock', 'punk', 'garage rock']
                                        'tag_date'  1969
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1622659205.8959546  (2021-06-02 20:40:05)
                             'size'  6082517