======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '122'
                                          'artist'  'The Shadows'
                                     'text_people'  ''
                                         'release'  '20 Golden Greats'
                                           'title'  'Wonderful Land'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['guitar', '60s', 'oldies', 'instrumental', 'rock', 'classic rock']"
                                     'discogstags'  "['rock', 'rock & roll']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '124.775'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '20 Golden Greats'
'TBPM' (BPM (beats per minute))                     '124.775'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDOR' (Original release time)                      '1977'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Wonderful Land'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Shadows'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'rock & roll']
'TXXX:lastfmtags'                                   ['guitar', '60s', 'oldies', 'instrumental', 'rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.64 dB'
'TXXX:replaygain_track_peak'                        '0.449794'

========================== row from database ==========================
                                              'id'  1420920
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/The Shadows/The Shadows__cifs2c34.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  122
                                           'genre'  rock-unsorted
                                        'filesize'  1961818
                                           'mtime'  1620388554
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner Shadows__cifs2c34 rock unsorted
                                      'tag_artist'  The Shadows
                                     'tag_release'  20 Golden Greats
                                       'tag_title'  Wonderful Land
                                             'bpm'  124.775
                                    'search_title'  'land':2 'wonderful':1
                                   'search_artist'  'shadows':2 'the':1
                                  'search_release'  '20':1 'golden':2 'greats':3
                                     'search_rest'  'cifs2c34':6 'garage':2 'punk':1 'rock':7 'shadows':5 'stoner':4 'surf':3 'unsorted':8
                                    'search_combo'  '20':5C 'cifs2c34':13 'garage':9 'golden':6C 'greats':7C 'land':2A 'punk':8 'rock':14 'shadows':4B,12 'stoner':11 'surf':10 'the':3B 'unsorted':15 'wonderful':1A
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['guitar', '60s', 'oldies', 'instrumental', 'rock', 'classic rock']
                                        'tag_date'  1977
                                     'discogstags'  ['rock', 'rock & roll']

============================== file details ==============================
                                           'mtime'  1620388554.29137  (2021-05-07 13:55:54)
                             'size'  1961818