======================== unified (from filesystem) ========================
                                         'bitrate'  '238.402'
                                        'duration'  '212'
                                          'artist'  'Peggy Lee'
                                     'text_people'  'DuBose Heyward/George Gershwin/Ira Gershwin'
                                         'release'  'The Radio Years'
                                           'title'  'Summertime'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-3', 'q-drums-1', 'q-other-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'female vocalists', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '142.910'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Radio Years'
'TBPM' (BPM (beats per minute))                     '142.910'
'TCOM' (Composer)                                   'DuBose Heyward/George Gershwin/Ira Gershwin'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Summertime'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Peggy Lee'
'TPE2' (Band/orchestra/accompaniment)               'Peggy Lee'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'jazz', 'female vocalists', 'oldies', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.558858'

========================== row from database ==========================
                                              'id'  1119129
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/4.the radio years/06. Summertime.mp3
                                         'working'  None
                                         'bitrate'  238
                                    'duration_sec'  212
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  6341279
                                           'mtime'  1620528005
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 4.the radio years 06. prerock jb jazz vocal
                                      'tag_artist'  Peggy Lee
                                     'tag_release'  The Radio Years
                                       'tag_title'  Summertime
                                             'bpm'  142.91
                                    'search_title'  'summertime':1
                                   'search_artist'  'lee':2 'peggy':1
                                  'search_release'  'radio':2 'the':1 'years':3
                                     'search_rest'  '06':10,11 '4':5 '4the':7 'country':4 'exotica':2 'jazz':1 'jb':13 'oldies':3 'prerock':12 'radio':8 'the':6 'vocal':14 'years':9
                                    'search_combo'  '06':16,17 '4':11 '4the':13 'country':10 'exotica':8 'jazz':7 'jb':19 'lee':3B 'oldies':9 'peggy':2B 'prerock':18 'radio':5C,14 'summertime':1A 'the':4C,12 'vocal':20 'years':6C,15
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'jazz', 'female vocalists', 'oldies', 'swing']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528005.3712652  (2021-05-09 04:40:05)
                             'size'  6341279