======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '339'
                                          'artist'  'Ralph McTell'
                                     'text_people'  ''
                                         'release'  'Sand In Your Shoes'
                                           'title'  'Peppers and Tomatoes'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'acoustic', 'british', 'folk', 'singer songwriter']"
                                     'discogstags'  "['folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'ifs-folk-rock'
                                             'bpm'  '94.415'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:Cover Image'                                  type PictureType.COVER_FRONT (Cover (front)) b'Cover Image'
                                     
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Sand In Your Shoes'
'TBPM' (BPM (beats per minute))                     '94.415'
'TCON' (Content type, a.k.a. Genre)                 'ifs-folk-rock'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Peppers and Tomatoes'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ralph McTell'
'TRCK' (Track number/Position in set)               '10'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'TXXX:lastfmtags'                                   ['oldies', 'acoustic', 'british', 'folk', 'singer songwriter']
'TXXX:original release date'                        ['1995', '1998']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.10 dB'
'TXXX:replaygain_track_peak'                        '0.663187'

========================== row from database ==========================
                                              'id'  1307526
                                            'path'  /data/Music/Bulk/00poprockelectronic/Ralph McTell/Ralph McTell__MBZ;#Ralph McTell;#Sand In Your Shoes;#10;#Peppers and Tomatoes.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  339
                                           'genre'  ifs-folk-rock
                                        'filesize'  5488572
                                           'mtime'  1637330750
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic McTell__MBZ;#Ralph McTell;#Sand Shoes;#10;#Peppers ifs folk rock
                                      'tag_artist'  Ralph McTell
                                     'tag_release'  Sand In Your Shoes
                                       'tag_title'  Peppers and Tomatoes
                                             'bpm'  94.415
                                    'search_title'  'and':2 'peppers':1 'tomatoes':3
                                   'search_artist'  'mc':3 'mctell':2 'ralph':1 'tell':4
                                  'search_release'  'in':2 'sand':1 'shoes':4 'your':3
                                     'search_rest'  '00poprockelectronic':1 '10':13,16 'folk':19 'ifs':18 'mbz':3,6,23,26 'mc':21 'mctell':2,5,8,10 'peppers':14,17 'ralph':4,7,24,27 'rock':20 'sand':9,11,29,31 'shoes':12,15 'tell':22,25,28,30
                                    'search_combo'  '00poprockelectronic':12 '10':24,27 'and':2A 'folk':30 'ifs':29 'in':9C 'mbz':14,17,34,37 'mc':6B,32 'mctell':5B,13,16,19,21 'peppers':1A,25,28 'ralph':4B,15,18,35,38 'rock':31 'sand':8C,20,22,40,42 'shoes':11C,23,26 'tell':7B,33,36,39,41 'tomatoes':3A 'your':10C
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'acoustic', 'british', 'folk', 'singer songwriter']
                                        'tag_date'  1998
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1637330750.484717  (2021-11-19 15:05:50)
                             'size'  5488572