======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '184'
                                          'artist'  'Andrés Segovia'
                                     'text_people'  ''
                                         'release'  'The Segovia Collection (CD 3)'
                                           'title'  'Fernando Sor - Etude n0 13 in B flat major'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['guitar', 'instrumental', 'classical guitar', 'classical', 'spanish']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '30'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '84.385'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Segovia Collection (CD 3)'
'TBPM' (BPM (beats per minute))                     '84.385'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Fernando Sor - Etude n0 13 in B flat major'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Andris Segovia'
'TPE2' (Band/orchestra/accompaniment)               'Andrés Segovia'
'TRCK' (Track number/Position in set)               '30'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['guitar', 'instrumental', 'classical guitar', 'classical', 'spanish']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.90 dB'
'TXXX:replaygain_track_peak'                        '0.861211'

========================== row from database ==========================
                                              'id'  964077
                                            'path'  /data/Music/Bulk/00localcharacter/HAROLD/30 - Fernando Sor - Etude n° 13 in B flat major.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  184
                                           'genre'  loc-unsorted
                                        'filesize'  5892225
                                           'mtime'  1678464165
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter HAROLD 30 n° loc unsorted
                                      'tag_artist'  Andrés Segovia
                                     'tag_release'  The Segovia Collection (CD 3)
                                       'tag_title'  Fernando Sor - Etude n0 13 in B flat major
                                             'bpm'  84.385
                                    'search_title'  'b':6 'etude':3 'fernando':1 'flat':7 'in':5 'major':8 'n0':4 'sor':2
                                   'search_artist'  'andres':1,2 'segovia':3
                                  'search_release'  '3':6,7 'cd':4,5 'collection':3 'segovia':2 'the':1
                                     'search_rest'  '30':2 'harold':1 'loc':4 'n':3 'unsorted':5
                                    'search_combo'  '3':17C,18C '30':20 'andres':9B,10B 'b':6A 'cd':15C,16C 'collection':14C 'etude':3A 'fernando':1A 'flat':7A 'harold':19 'in':5A 'loc':22 'major':8A 'n':21 'n0':4A 'segovia':11B,13C 'sor':2A 'the':12C 'unsorted':23
                                    'tag_tracknum'  30
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']
                                      'lastfmtags'  ['guitar', 'instrumental', 'classical guitar', 'classical', 'spanish']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678464165.3055427  (2023-03-10 17:02:45)
                             'size'  5892225