======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '137'
                                          'artist'  'Julius LaRosa'
                                     'text_people'  ''
                                         'release'  'New Title'
                                           'title'  'Mama Guitar'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['male vocalists', 'american', 'oldies', 'pop', 'italian']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '481'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-italian'
                                             'bpm'  '93.457'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'New Title'
'TBPM' (BPM (beats per minute))                     '93.457'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-italian'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Mama Guitar'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Julius LaRosa'
'TRCK' (Track number/Position in set)               '481'
'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:lastfmtags'                                   ['male vocalists', 'american', 'oldies', 'pop', 'italian']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '-6.18 dB'
'TXXX:replaygain_track_peak'                        '0.932215'

========================== row from database ==========================
                                              'id'  1441388
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-481 - Julius Larosa - Mama Guitar.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  137
                                           'genre'  prerock-vocal-italian
                                        'filesize'  5519008
                                           'mtime'  1621625786
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 481 Larosa prerock vocal italian
                                      'tag_artist'  Julius LaRosa
                                     'tag_release'  New Title
                                       'tag_title'  Mama Guitar
                                             'bpm'  93.457
                                    'search_title'  'guitar':2 'mama':1
                                   'search_artist'  'julius':1 'la':3 'larosa':2 'rosa':4
                                  'search_release'  'new':1 'title':2
                                     'search_rest'  '00oldiepop':5 '1957':6 '481':8 '57':7 'country':4 'exotica':2 'italian':12 'jazz':1 'larosa':9 'oldies':3 'prerock':10 'vocal':11
                                    'search_combo'  '00oldiepop':13 '1957':14 '481':16 '57':15 'country':12 'exotica':10 'guitar':2A 'italian':20 'jazz':9 'julius':3B 'la':5B 'larosa':4B,17 'mama':1A 'new':7C 'oldies':11 'prerock':18 'rosa':6B 'title':8C 'vocal':19
                                    'tag_tracknum'  481
                                      'num_images'  0
                                             'key'  8A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['male vocalists', 'american', 'oldies', 'pop', 'italian']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625785.6867146  (2021-05-21 21:36:25)
                             'size'  5519008