======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '223'
                                          'artist'  '101 Strings Orchestra'
                                     'text_people'  ''
                                         'release'  'The Best of Christmas '
                                           'title'  'The Christmas Song'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-UNU-1', 'Q-SYN-1', 'Q-BUSY-3', 'Q-GRIT-1', 'q-bass-1', 'q-play-2', "
 "'Q-CHART-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-1']")
                                      'lastfmtags'  "['instrumental', 'edhits', 'myhits', 'classical', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '138.1'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Best of Christmas '
'TBPM' (BPM (beats per minute))                     '138.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'The Christmas Song'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '101 Strings Orchestra'
'TRCK' (Track number/Position in set)               '01'
'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', 'edhits', 'myhits', 'classical', 'easy listening']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.49 dB'
'TXXX:replaygain_track_peak'                        '0.575309'

========================== row from database ==========================
                                              'id'  1479350
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The 101 Strings Orchestra/2009 - The Best of Christmas/01 - The Christmas Song.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  223
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  8962205
                                           'mtime'  1621705586
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 2009 electronic generic or radio easy listening
                                      'tag_artist'  101 Strings Orchestra
                                     'tag_release'  The Best of Christmas 
                                       'tag_title'  The Christmas Song
                                             'bpm'  138.1
                                    'search_title'  'christmas':2 'song':3 'the':1
                                   'search_artist'  '101':1 'orchestra':3 'strings':2
                                  'search_release'  'best':2 'christmas':4 'of':3 'the':1
                                     'search_rest'  '2009':5 'country':4 'easy':10 'electronic':6 'exotica':2 'generic':7 'jazz':1 'listening':11 'oldies':3 'or':8 'radio':9
                                    'search_combo'  '101':4B '2009':15 'best':8C 'christmas':2A,10C 'country':14 'easy':20 'electronic':16 'exotica':12 'generic':17 'jazz':11 'listening':21 'of':9C 'oldies':13 'or':18 'orchestra':6B 'radio':19 'song':3A 'strings':5B 'the':1A,7C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  8A
                                           '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-2', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'q-bass-1']
                                      'lastfmtags'  ['instrumental', 'edhits', 'myhits', 'classical', 'easy listening']
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705586.2219315  (2021-05-22 19:46:26)
                             'size'  8962205