======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '303'
                                          'artist'  'Prince'
                                     'text_people'  ''
                                         'release'  '1999'
                                           'title'  'Little Red Corvette'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'rock', 'pop', 'funk']"
                                     'discogstags'  "['funk / soul', 'pop', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1983'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '122.6'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '1999'
'TBPM' (BPM (beats per minute))                     '122.6'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1983'
'TIT2' (Title/songname/content description)         'Little Red Corvette'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Prince'
'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'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'pop', 'funk']
'TXXX:lastfmtags'                                   ['80s', 'rock', 'pop', 'funk']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.55 dB'
'TXXX:replaygain_track_peak'                        '0.508915'

========================== row from database ==========================
                                              'id'  1390443
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/02 - Little Red Corvette.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  303
                                           'genre'  funk or soul
                                        'filesize'  7287845
                                           'mtime'  1628357938
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 02 funk soul
                                      'tag_artist'  Prince
                                     'tag_release'  1999
                                       'tag_title'  Little Red Corvette
                                             'bpm'  122.6
                                    'search_title'  'corvette':3 'little':1 'red':2
                                   'search_artist'  'prince':1
                                  'search_release'  '1999':1
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'funk':7 'loose':3,4 'soul':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 '1999':5C 'corvette':3A 'files':10,11 'funk':12 'little':1A 'loose':8,9 'prince':4B 'red':2A 'soul':13 'unsorted':7
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['80s', 'rock', 'pop', 'funk']
                                        'tag_date'  1983
                                     'discogstags'  ['funk / soul', 'pop', 'funk']

============================== file details ==============================
                                           'mtime'  1628357937.6246345  (2021-08-07 19:38:57)
                             'size'  7287845