======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '172'
                                          'artist'  'Nana Mouskouri'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Morning has broken'
                                           'quals'  ("['Q-HAP-3', 'Q-BUSY-3', 'Q-GRIT-2', 'q-bass-3', 'q-drums-1', 'q-other-2', "
 "'q-piano-1', 'q-vocals-4', 'Q-SYN-1', 'Q-UNU-1', 'Q-PLAY-2', 'Q-CHART-2', "
 "'Q-JZFKS-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-3']")
                                      'lastfmtags'  "['female vocalists', 'greek', 'pop', 'jazz', 'french']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-eur-greece'
                                             'bpm'  '146.0'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '146.0'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-greece'
'TIT2' (Title/songname/content description)         'Morning has broken'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nana Mouskouri'
'TRCK' (Track number/Position in set)               '0'
'TXXX:MusicMagic Data'                              'AgEBYgBsghetbMgGhXfmwDpigAGCS4B1/C+byRYPgAHSp4ABheT+/K2AgAHBJYABhOOAAaUoz7XxO4ABgAGaAAJa86SAAZhbgAKAAYY6pzTZvIY21Vwn9KaFgZCA3PSwo5oGo4BMz8GXk4TpAAGvLIE5yOKBaIXbgAGrXbEQzCyFG4ABsuwRO/FypxKa+4ACgAE='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:http://www.foosic.org/'                       '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'
'TXXX:lastfmtags'                                   ['female vocalists', 'greek', 'pop', 'jazz', 'french']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.33 dB'
'TXXX:replaygain_track_peak'                        '0.400317'

========================== row from database ==========================
                                              'id'  1495277
                                            'path'  /data/Music/Other/Pa/All/Nana Mouskouri/Morning has broken.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  172
                                           'genre'  loc-eur-greece
                                        'filesize'  3449439
                                           'mtime'  1621630395
                                   'redo_metaread'  0
                                        'rest_str'   Pa All loc eur greece
                                      'tag_artist'  Nana Mouskouri
                                     'tag_release'  None
                                       'tag_title'  Morning has broken
                                             'bpm'  146.0
                                    'search_title'  'broken':3 'has':2 'morning':1
                                   'search_artist'  'mouskouri':2 'nana':1
                                  'search_release'  
                                     'search_rest'  'all':2 'eur':4 'greece':5 'loc':3 'pa':1
                                    'search_combo'  'all':7 'broken':3A 'eur':9 'greece':10 'has':2A 'loc':8 'morning':1A 'mouskouri':5B 'nana':4B 'pa':6
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-1', 'q-other-2', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3']
                                      'lastfmtags'  ['female vocalists', 'greek', 'pop', 'jazz', 'french']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630395.4444125  (2021-05-21 22:53:15)
                             'size'  3449439