======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '183'
                                          'artist'  'The 101 Strings Orchestra'
                                     'text_people'  ''
                                         'release'  'The Country Collection'
                                           'title'  "Your Cheatin' Heart"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-UNU-1', 'Q-SYN-1', 'Q-BUSY-3', 'Q-GRIT-1', 'q-bass-2', 'q-play-2', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-1']")
                                      'lastfmtags'  "['instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '84.1'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Country Collection'
'TBPM' (BPM (beats per minute))                     '84.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         "Your Cheatin' Heart"
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'The 101 Strings Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'The 101 Strings Orchestra'
'TRCK' (Track number/Position in set)               '02'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   'instrumental'
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.00 dB'
'TXXX:replaygain_track_peak'                        '0.746483'

========================== row from database ==========================
                                              'id'  1500870
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The 101 Strings Orchestra/1993 - The Country Collection/02 - Your Cheatin_ Heart.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  183
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  5919219
                                           'mtime'  1621705563
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1993 02 Cheatin_ electronic generic or radio easy listening
                                      'tag_artist'  The 101 Strings Orchestra
                                     'tag_release'  The Country Collection
                                       'tag_title'  Your Cheatin' Heart
                                             'bpm'  84.1
                                    'search_title'  'cheatin':2,3 'heart':4 'your':1
                                   'search_artist'  '101':2 'orchestra':4 'strings':3 'the':1
                                  'search_release'  'collection':3 'country':2 'the':1
                                     'search_rest'  '1993':5 'cheatin':6 'country':4 'easy':11 'electronic':7 'exotica':2 'generic':8 'jazz':1 'listening':12 'oldies':3 'or':9 'radio':10
                                    'search_combo'  '101':6B '1993':16 'cheatin':2A,3A,17 'collection':11C 'country':10C,15 'easy':22 'electronic':18 'exotica':13 'generic':19 'heart':4A 'jazz':12 'listening':23 'oldies':14 'or':20 'orchestra':8B 'radio':21 'strings':7B 'the':5B,9C 'your':1A
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'q-play-2', 'Q-OLDST-3', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'q-bass-2']
                                      'lastfmtags'  ['instrumental']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705562.5434403  (2021-05-22 19:46:02)
                             'size'  5919219