======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '346'
                                          'artist'  'The Residents'
                                     'text_people'  ''
                                         'release'  'Freak Show'
                                           'title'  'Nobody Laughs When They Leave'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['electronic', 'post punk', 'avant garde', 'avantgarde', 'experimental']"
                                     'discogstags'  "['electronic', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness-calmer'
                                             'bpm'  '144.0'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Freak Show'
'TBPM' (BPM (beats per minute))                     '144.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness-calmer'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Nobody Laughs When They Leave'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Residents'
'TRCK' (Track number/Position in set)               '09'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:discogstags'                                  ['electronic', 'experimental']
'TXXX:lastfmtags'                                   ['electronic', 'post punk', 'avant garde', 'avantgarde', 'experimental']
'TXXX:q-bass'                                       '3'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.80 dB'
'TXXX:replaygain_track_peak'                        '0.828996'

========================== row from database ==========================
                                              'id'  934840
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/The Residents/1990 - The Residents - Freak Show (Cryptic Corporation) [128k]/09. Nobody Laughs When They Leave.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  346
                                           'genre'  electronic-experimental-oddness-calmer
                                        'filesize'  5550706
                                           'mtime'  1636902860
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 1990 (Cryptic Corporation) [128k] 09. electronic experimental oddness calmer
                                      'tag_artist'  The Residents
                                     'tag_release'  Freak Show
                                       'tag_title'  Nobody Laughs When They Leave
                                             'bpm'  144.0
                                    'search_title'  'laughs':2 'leave':5 'nobody':1 'they':4 'when':3
                                   'search_artist'  'residents':2 'the':1
                                  'search_release'  'freak':1 'show':2
                                     'search_rest'  '09':8,9 '128k':6,7 '1990':1 'calmer':13 'corporation':4,5 'cryptic':2,3 'electronic':10 'experimental':11 'oddness':12
                                    'search_combo'  '09':17,18 '128k':15,16 '1990':10 'calmer':22 'corporation':13,14 'cryptic':11,12 'electronic':19 'experimental':20 'freak':8C 'laughs':2A 'leave':5A 'nobody':1A 'oddness':21 'residents':7B 'show':9C 'the':6B 'they':4A 'when':3A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'post punk', 'avant garde', 'avantgarde', 'experimental']
                                        'tag_date'  1991
                                     'discogstags'  ['electronic', 'experimental']

============================== file details ==============================
                                           'mtime'  1636902859.992238  (2021-11-14 16:14:19)
                             'size'  5550706