======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '132'
                                          'artist'  'Presidents of the United States of America'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Lump'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', 'stoner rock', 'alternative', 'punk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '142.108'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '142.108'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Lump'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               'Presidents of the United States of America'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['alternative rock', 'stoner rock', 'alternative', 'punk', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.472990'
'TXXX:tracknum'                                     '178'

========================== row from database ==========================
                                              'id'  1303056
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/178 - Presidents of the United States of America - Lump (1995).mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  132
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  1857028
                                           'mtime'  1620566635
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 178 (1995) electronic generic or radio unsorted
                                      'tag_artist'  Presidents of the United States of America
                                     'tag_release'  None
                                       'tag_title'  Lump
                                             'bpm'  142.108
                                    'search_title'  'lump':1
                                   'search_artist'  'america':6 'of':2 'presidents':1 'states':5 'the':3 'united':4
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '178':3 '1995':4,5 '90s':2 'electronic':6 'generic':7 'or':8 'radio':9 'unsorted':10
                                    'search_combo'  '00poprockelectronic':8 '178':10 '1995':11,12 '90s':9 'america':7B 'electronic':13 'generic':14 'lump':1A 'of':3B 'or':15 'presidents':2B 'radio':16 'states':6B 'the':4B 'united':5B 'unsorted':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'stoner rock', 'alternative', 'punk', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620566634.5338726  (2021-05-09 15:23:54)
                             'size'  1857028