======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '141'
                                          'artist'  'Picadilly Line'
                                     'text_people'  ''
                                         'release'  '100 British Psychedelic Masterpieces Cd 2'
                                           'title'  'Yellow Rainbow'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-BUSY-3', 'Q-SYN-1', 'Q-UNU-1', 'Q-GRIT-3', "
 "'Q-PLAY-3', 'q-bass-3', 'Q-CHART-2', 'Q-JZFKS-1', 'q-drums-2', 'q-other-3', "
 "'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'Q-MIXBEAT-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['psychedelic', '60s', 'psychedelic rock', 'baroque pop', 'british']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'rock-cppex-psychedelic'
                                             'bpm'  '85.8'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'http://tommentonenlacuadra.blogspot.com'
'COMM:ID3v1 Comment:eng'                            'http://tommentonenlacuadra.b'
'COMM:iTunNORM:eng'                                 (' 00000B44 00000B44 00003D37 00003D37 00016868 00016868 00007D1D 00007D1D '
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'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000A08 00000000005F03E8 00000000 0044E0A8 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '22+5758398DCAB03A49BB274CAC027540FD+8320064'
'TALB' (Album/Movie/Show title)                     '100 British Psychedelic Masterpieces Cd 2'
'TBPM' (BPM (beats per minute))                     '85.8'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-psychedelic'
'TDRC' (Recording time)                             '2011'
'TENC' (Encoded by)                                 'Itunes V7.4.3.1'
'TIT2' (Title/songname/content description)         'Yellow Rainbow'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Picadilly Line'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['psychedelic', '60s', 'psychedelic rock', 'baroque pop', 'british']
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-4.58 dB'
'TXXX:replaygain_track_peak'                        '0.688168'

========================== row from database ==========================
                                              'id'  1495832
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/100 British Psychedelic Masterpieces CD 2/14 - Picadilly Line - Yellow Rainbow.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  141
                                           'genre'  rock-cppex-psychedelic
                                        'filesize'  4523866
                                           'mtime'  1636400088
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy CD 14 rock cppex psychedelic
                                      'tag_artist'  Picadilly Line
                                     'tag_release'  100 British Psychedelic Masterpieces Cd 2
                                       'tag_title'  Yellow Rainbow
                                             'bpm'  85.8
                                    'search_title'  'rainbow':2 'yellow':1
                                   'search_artist'  'line':2 'picadilly':1
                                  'search_release'  '100':1 '2':6 'british':2 'cd':5 'masterpieces':4 'psychedelic':3
                                     'search_rest'  'cd':2 'classicprogpsy':1 'cppex':4 'psychedelic':5 'rock':3
                                    'search_combo'  '100':5C '2':10C 'british':6C 'cd':9C,12 'classicprogpsy':11 'cppex':14 'line':4B 'masterpieces':8C 'picadilly':3B 'psychedelic':7C,15 'rainbow':2A 'rock':13 'yellow':1A
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-1', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3']
                                      'lastfmtags'  ['psychedelic', '60s', 'psychedelic rock', 'baroque pop', 'british']
                                        'tag_date'  2011
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400087.830411  (2021-11-08 20:34:47)
                             'size'  4523866