======================== unified (from filesystem) ========================
                                         'bitrate'  '173.021'
                                        'duration'  '172'
                                          'artist'  'Bo Diddley'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Pills'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-HHRNBTT-2', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll;rock-early-blues'
                                             'bpm'  '143.721'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '143.721'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-early-rocknroll', 'rock-early-blues']
'TIT2' (Title/songname/content description)         'Pills'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bo Diddley'
'TXXX:Mp3gain_minmax'                               '000,189'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.16 dB'
'TXXX:replaygain_track_peak'                        '0.490055'

========================== row from database ==========================
                                              'id'  793118
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Diddley, Bo/Bo Diddley (re-issue)/Bo Diddley - Pills.mp3
                                         'working'  None
                                         'bitrate'  173
                                    'duration_sec'  172
                                           'genre'  rock-pop-early-rocknroll;rock-early-blues
                                        'filesize'  3726217
                                           'mtime'  1622659486
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Diddley, (re issue) rock pop early rocknroll;rock early blues
                                      'tag_artist'  Bo Diddley
                                     'tag_release'  None
                                       'tag_title'  Pills
                                             'bpm'  143.721
                                    'search_title'  'pills':1
                                   'search_artist'  'bo':1 'diddley':2
                                  'search_release'  
                                     'search_rest'  'blues':18 'country':4 'diddley':5,6 'early':13 'exotica':2 'issue':9,10 'jazz':1 'oldies':3 'pop':12 're':7,8 'rock':11,15,17 'rocknroll':14,16
                                    'search_combo'  'blues':21 'bo':2B 'country':7 'diddley':3B,8,9 'early':16 'exotica':5 'issue':12,13 'jazz':4 'oldies':6 'pills':1A 'pop':15 're':10,11 'rock':14,18,20 'rocknroll':17,19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'blues', 'rhythm and blues', 'soul', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659485.5794485  (2021-06-02 20:44:45)
                             'size'  3726217