======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '197'
                                          'artist'  'Mario Lanza'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Drink, Drink, Drink'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-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'  "['opera', 'classic', 'classical', 'tenor']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  '19'
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-opera'
                                             'bpm'  '84.526'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '54-171 POS 21'
'COMM:ID3v1 Comment:XXX'                            '54-171 POS 21'
'TBPM' (BPM (beats per minute))                     '84.526'
'TCON' (Content type, a.k.a. Genre)                 'prerock-opera'
'TDRC' (Recording time)                             '1954'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Sicherer Modus)'
'TIT2' (Title/songname/content description)         'Drink, Drink, Drink'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mario Lanza'
'TRCK' (Track number/Position in set)               '03/19'
'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'                                   ['opera', 'classic', 'classical', 'tenor']
'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'                        '+0.18 dB'
'TXXX:replaygain_track_peak'                        '0.488499'

========================== row from database ==========================
                                              'id'  1443910
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/54-171 - Mario Lanza - Drink, Drink, Drink.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  197
                                           'genre'  prerock-opera
                                        'filesize'  7893192
                                           'mtime'  1620526271
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 54 171 prerock opera
                                      'tag_artist'  Mario Lanza
                                     'tag_release'  None
                                       'tag_title'  Drink, Drink, Drink
                                             'bpm'  84.526
                                    'search_title'  'drink':1,2
                                   'search_artist'  'lanza':2 'mario':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '171':8 '1954':6 '54':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'opera':10 'prerock':9
                                    'search_combo'  '00oldiepop':9 '171':12 '1954':10 '54':11 'country':8 'drink':1A,2A 'exotica':6 'jazz':5 'lanza':4B 'mario':3B 'oldies':7 'opera':14 'prerock':13
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  7A
                                           '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'  ['opera', 'classic', 'classical', 'tenor']
                                        'tag_date'  1954
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526270.7200983  (2021-05-09 04:11:10)
                             'size'  7893192