======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '255'
                                          'artist'  'Carpenters'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "You're the One"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'Q-PLAY-2', 'Q-PIANO-2', 'q-syn-1', 'q-bass-3', 'q-busy-3', "
 "'q-grit-2', 'q-chart-3', 'q-drums-2', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'female vocalists', 'pop', 'easy listening', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-squeaky'
                                             'bpm'  '145.790'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '145.790'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-squeaky'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         "You're the One"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Carpenters'
'TXXX:Mp3gain_minmax'                               '106,211'
'TXXX:Mp3gain_undo'                                 '-001,-001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'female vocalists', 'pop', 'easy listening', '70s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.58 dB'
'TXXX:replaygain_track_peak'                        '0.974571'

========================== row from database ==========================
                                              'id'  1517326
                                            'path'  /data/Music/Bulk/00poprockelectronic/Carpenters/[1997] Love Songs/Carpenters - You_re the One.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  255
                                           'genre'  electronic-generic or radio-squeaky
                                        'filesize'  6135724
                                           'mtime'  1622801113
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1997] Love Songs You_re electronic generic or radio squeaky
                                      'tag_artist'  Carpenters
                                     'tag_release'  None
                                       'tag_title'  You're the One
                                             'bpm'  145.79
                                    'search_title'  'one':5 're':2 'the':4 'you':1 'youre':3
                                   'search_artist'  'carpenters':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1997':2,3 'electronic':8 'generic':9 'love':4 'or':10 'radio':11 're':7 'songs':5 'squeaky':12 'you':6
                                    'search_combo'  '00poprockelectronic':7 '1997':8,9 'carpenters':6B 'electronic':14 'generic':15 'love':10 'one':5A 'or':16 'radio':17 're':2A,13 'songs':11 'squeaky':18 'the':4A 'you':1A,12 'youre':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'female vocalists', 'pop', 'easy listening', '70s']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622801113.4289956  (2021-06-04 12:05:13)
                             'size'  6135724