======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '158'
                                          'artist'  'The 101 Strings Orchestra'
                                     'text_people'  ''
                                         'release'  'More of the best of the 101 Strings'
                                           'title'  "Tina's waltz"
                                           '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-4', 'q-play-2', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'Q-MIXBEAT-1']")
                                      'lastfmtags'  "['instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '106.4'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'More of the best of the 101 Strings'
'TBPM' (BPM (beats per minute))                     '106.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         "Tina's waltz"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'The 101 Strings Orchestra'
'TRCK' (Track number/Position in set)               '12'
'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'                                       '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.83 dB'
'TXXX:replaygain_track_peak'                        '0.710210'

========================== row from database ==========================
                                              'id'  1501004
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The 101 Strings Orchestra/1996 - More Of The Best Of 101 Strings/12 - Tina_s Waltz.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  158
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  6329908
                                           'mtime'  1621705571
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 1996 Of Best Of 12 Tina_s Waltz electronic generic radio easy listening
                                      'tag_artist'  The 101 Strings Orchestra
                                     'tag_release'  More of the best of the 101 Strings
                                       'tag_title'  Tina's waltz
                                             'bpm'  106.4
                                    'search_title'  's':2 'tina':1 'tinas':3 'waltz':4
                                   'search_artist'  '101':2 'orchestra':4 'strings':3 'the':1
                                  'search_release'  '101':5 'best':4 'more':1 'of':2 'strings':6 'the':3
                                     'search_rest'  '1996':5 'best':7 'country':4 'easy':14 'electronic':11 'exotica':2 'generic':12 'jazz':1 'listening':15 'of':6 'oldies':3 'radio':13 's':9 'tina':8 'waltz':10
                                    'search_combo'  '101':6B,13C '1996':19 'best':12C,21 'country':18 'easy':28 'electronic':25 'exotica':16 'generic':26 'jazz':15 'listening':29 'more':9C 'of':10C,20 'oldies':17 'orchestra':8B 'radio':27 's':2A,23 'strings':7B,14C 'the':5B,11C 'tina':1A,22 'tinas':3A 'waltz':4A,24
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  7A
                                           '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-1', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'q-bass-4']
                                      'lastfmtags'  ['instrumental']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705570.9133627  (2021-05-22 19:46:10)
                             'size'  6329908