======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '121'
                                          'artist'  'Ricky Nelson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "It's Late"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['60s', 'rock', 'oldies', 'rockabilly', 'classic rock']"
                                     'discogstags'  "['electronic', 'garage house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rockabilly'
                                             'bpm'  '145.267'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-081 POS 9'
'COMM:ID3v1 Comment:XXX'                            '59-081 POS 9'
'TBPM' (BPM (beats per minute))                     '145.267'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rockabilly'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         "It's Late"
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ricky Nelson'
'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'                                  ['electronic', 'garage house']
'TXXX:lastfmtags'                                   ['60s', 'rock', 'oldies', 'rockabilly', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.56 dB'
'TXXX:replaygain_track_peak'                        '0.544010'

========================== row from database ==========================
                                              'id'  1520075
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-081 - Ricky Nelson - It_s Late.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  121
                                           'genre'  rock-pop-early-rockabilly
                                        'filesize'  4860783
                                           'mtime'  1622659481
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 081 It_s rock pop early rockabilly
                                      'tag_artist'  Ricky Nelson
                                     'tag_release'  None
                                       'tag_title'  It's Late
                                             'bpm'  145.267
                                    'search_title'  'it':1 'its':3 'late':4 's':2
                                   'search_artist'  'nelson':2 'ricky':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1959':6 '59':7 'country':4 'early':12 'exotica':2 'it':8 'jazz':1 'oldies':3 'pop':11 'rock':10 'rockabilly':13 's':9
                                    'search_combo'  '00oldiepop':11 '1959':12 '59':13 'country':10 'early':18 'exotica':8 'it':1A,14 'its':3A 'jazz':7 'late':4A 'nelson':6B 'oldies':9 'pop':17 'ricky':5B 'rock':16 'rockabilly':19 's':2A,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'rock', 'oldies', 'rockabilly', 'classic rock']
                                        'tag_date'  1959
                                     'discogstags'  ['electronic', 'garage house']

============================== file details ==============================
                                           'mtime'  1622659481.2047973  (2021-06-02 20:44:41)
                             'size'  4860783