======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '214'
                                          'artist'  'Charles Harrison'
                                     'text_people'  ''
                                         'release'  'Columbia  1791 (45804)'
                                           'title'  "There's A Long Long Trail (+ Albert Wiederhold)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['all', 'schellack schatz', '1890 1920', 'wartime']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1915'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '94.8'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TALB' (Album/Movie/Show title)                     'Columbia  1791 (45804)'
'TBPM' (BPM (beats per minute))                     '94.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1915-09-10'
'TIT2' (Title/songname/content description)         "There's A Long Long Trail (+ Albert Wiederhold)"
'TKEY' (Initial key)                                '12A'
'TLEN' (Length)                                     '214000'
'TPE1' (Lead performer(s)/Soloist(s))               'Charles Harrison'
'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'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['all', 'schellack schatz', '1890 1920', 'wartime']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.62 dB'
'TXXX:replaygain_track_peak'                        '0.813191'

========================== row from database ==========================
                                              'id'  1521775
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1915/Charles Harrison - There_s A Long Long Trail (+ Albert Wiederhold) 10-9-1915.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  214
                                           'genre'  prerock-vocal
                                        'filesize'  4408864
                                           'mtime'  1620666224
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1915 There_s 10 1915 prerock vocal
                                      'tag_artist'  Charles Harrison
                                     'tag_release'  Columbia  1791 (45804)
                                       'tag_title'  There's A Long Long Trail (+ Albert Wiederhold)
                                             'bpm'  94.8
                                    'search_title'  'a':4 'albert':7 'long':5 's':2 'there':1 'theres':3 'trail':6 'wiederhold':8,9
                                   'search_artist'  'charles':1 'harrison':2
                                  'search_release'  '1791':2 '45804':3,4 'columbia':1
                                     'search_rest'  '00oldiepop':5 '1915':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 's':8 'there':7 'vocal':10
                                    'search_combo'  '00oldiepop':20 '1791':13C '1915':21 '45804':14C,15C 'a':4A 'albert':7A 'charles':10B 'columbia':12C 'country':19 'exotica':17 'harrison':11B 'jazz':16 'long':5A 'oldies':18 'prerock':24 's':2A,23 'there':1A,22 'theres':3A 'trail':6A 'vocal':25 'wiederhold':8A,9A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  12A
                                           '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['all', 'schellack schatz', '1890 1920', 'wartime']
                                        'tag_date'  1915
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620666224.1002157  (2021-05-10 19:03:44)
                             'size'  4408864