======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '136'
                                          'artist'  'Harmonicats'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1945'
                                           'title'  "Peg O' My Heart"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['billboard', 'dream melody', 'radio music', 'soeldentigers instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '142.910'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1945'
'TBPM' (BPM (beats per minute))                     '142.910'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         "Peg O' My Heart"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Harmonicats'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['billboard', 'dream melody', 'radio music', 'soeldentigers instrumental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.27 dB'
'TXXX:replaygain_track_peak'                        '0.566321'

========================== row from database ==========================
                                              'id'  1517128
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1947/02 Harmonicats - Peg O_ My Heart.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  136
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  2181677
                                           'mtime'  1628353494
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1947 02 O_ electronic generic or radio unsorted
                                      'tag_artist'  Harmonicats
                                     'tag_release'  Billboard Top Pop Singles of 1945
                                       'tag_title'  Peg O' My Heart
                                             'bpm'  142.91
                                    'search_title'  'heart':5 'my':4 'o':2,3 'peg':1
                                   'search_artist'  'harmonicats':1
                                  'search_release'  '1945':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1947':3 'electronic':5 'generic':6 'o':4 'or':7 'radio':8 'top100':2 'unsorted':9
                                    'search_combo'  '00poprockelectronic':13 '1945':12C '1947':15 'billboard':7C 'electronic':17 'generic':18 'harmonicats':6B 'heart':5A 'my':4A 'o':2A,3A,16 'of':11C 'or':19 'peg':1A 'pop':9C 'radio':20 'singles':10C 'top':8C 'top100':14 'unsorted':21
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['billboard', 'dream melody', 'radio music', 'soeldentigers instrumental']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628353494.424713  (2021-08-07 18:24:54)
                             'size'  2181677