======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '189'
                                          'artist'  'Ben Selvin'
                                     'text_people'  ''
                                         'release'  'Okeh  4086'
                                           'title'  'Desert Dreams'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz classics', 'all', 'swing', 'oldies', 'big band swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1920'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '88.207'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Okeh  4086'
'TBPM' (BPM (beats per minute))                     '88.207'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1920'
'TIT2' (Title/songname/content description)         'Desert Dreams'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ben Selvin'
'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:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['jazz classics', 'all', 'swing', 'oldies', 'big band swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+1.14 dB'
'TXXX:replaygain_track_peak'                        '0.563683'

========================== row from database ==========================
                                              'id'  1436115
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920/Ben Selvin - Desert Dreams -1-1920.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  189
                                           'genre'  prerock-band
                                        'filesize'  3796786
                                           'mtime'  1620559659
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920 1 1920 prerock band
                                      'tag_artist'  Ben Selvin
                                     'tag_release'  Okeh  4086
                                       'tag_title'  Desert Dreams
                                             'bpm'  88.207
                                    'search_title'  'desert':1 'dreams':2
                                   'search_artist'  'ben':1 'selvin':2
                                  'search_release'  '4086':2 'okeh':1
                                     'search_rest'  '00oldiepop':5 '1':7 '1920':6 'band':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8
                                    'search_combo'  '00oldiepop':11 '1':13 '1920':12 '4086':6C 'band':15 'ben':3B 'country':10 'desert':1A 'dreams':2A 'exotica':8 'jazz':7 'okeh':5C 'oldies':9 'prerock':14 'selvin':4B
                                    'tag_tracknum'  None
                                      '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz classics', 'all', 'swing', 'oldies', 'big band swing']
                                        'tag_date'  1920
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559658.9817686  (2021-05-09 13:27:38)
                             'size'  3796786