======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '409'
                                          'artist'  'Prodigy'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rave', 'electronic', 'hip hop', 'big beat', 'rap']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '129.979'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '129.979'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Prodigy'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['rave', 'electronic', 'hip hop', 'big beat', 'rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.91 dB'
'TXXX:replaygain_track_peak'                        '0.740860'

========================== row from database ==========================
                                              'id'  1301177
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Prodigy - The Fat Remixes - 03- breathe (like an aphex twin - mix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  409
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  6553616
                                           'mtime'  1620572946
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] The Fat Remixes 03 breathe (like an aphex twin mix) hip hop or rnb or rap or turntablism
                                      'tag_artist'  Prodigy
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  129.979
                                    'search_title'  None
                                   'search_artist'  'prodigy':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'an':13 'aphex':14 'breathe':10 'fat':8 'files':5,6 'hip':18 'hop':19 'like':11,12 'loose':3,4 'mix':16,17 'or':20 'rap':22 'remixes':9 'rnb':21 'the':7 'turntablism':23 'twin':15 'unsorted':2
                                    'search_combo'  '00poprockelectronic':2 'an':14 'aphex':15 'breathe':11 'fat':9 'files':6,7 'hip':19 'hop':20 'like':12,13 'loose':4,5 'mix':17,18 'or':21 'prodigy':1B 'rap':23 'remixes':10 'rnb':22 'the':8 'turntablism':24 'twin':16 'unsorted':3
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-piano-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rave', 'electronic', 'hip hop', 'big beat', 'rap']
                                        'tag_date'  
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620572946.0180013  (2021-05-09 17:09:06)
                             'size'  6553616