======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '160'
                                          'artist'  'Johnny Mathis'
                                     'text_people'  'Al Stillman/Robert Allen'
                                         'release'  '16 Most Requested Songs'
                                           'title'  'Teacher, Teacher'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', '60s', 'male vocalists', 'pop', 'easy listening', 'christmas']"
                                     'discogstags'  "['pop', 'ballad', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-lounge'
                                             'bpm'  '145.580'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-175 POS 21'
'COMM:ID3v1 Comment:XXX'                            '58-175 POS 21'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x000\x00+\x009\x006\x00+\x003\x00A\x000\x002\x00+\x006\x00B\x001\x004\x00+\x00A\x002\x00B\x00E\x00+\x00D\x008\x00A\x006\x00+\x001\x000\x001\x00A\x00A\x00+\x001\x003\x002\x000\x004\x00+\x001\x006\x00A\x00D\x00A\x00+\x001\x00B\x002\x00E\x007\x00+\x001\x00F\x002\x007\x00C\x00+\x002\x002\x006\x00E\x00D\x00+\x002\x005\x007\x00D\x00A\x00+\x002\x008\x007\x000\x005\x00+\x002\x00B\x00E\x001\x009\x00+\x002\x00E\x00F\x000\x006\x00+\x003\x002\x004\x005\x008\x00+\x003\x008\x00E\x004\x00D\x00\x00\x00')
'PRIV:AverageLevel:\x96\x0e\x00\x00'                PRIV(owner='AverageLevel', data=b'\x96\x0e\x00\x00')
'PRIV:PeakValue:-w\x00\x00'                         PRIV(owner='PeakValue', data=b'-w\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00'  PRIV(owner='WM/Provider', data=b'U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/WMCollectionID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMCollectionID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/WMContentID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMContentID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     '16 Most Requested Songs'
'TBPM' (BPM (beats per minute))                     '145.580'
'TCOM' (Composer)                                   'Al Stillman/Robert Allen'
'TCON' (Content type, a.k.a. Genre)                 'prerock-lounge'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Teacher, Teacher'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '161000'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Mathis'
'TPE2' (Band/orchestra/accompaniment)               'Johnny Mathis'
'TPUB' (Publisher)                                  'Sony'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'ballad', 'vocal']
'TXXX:lastfmtags'                                   ['oldies', '60s', 'male vocalists', 'pop', 'easy listening', 'christmas']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.34 dB'
'TXXX:replaygain_track_peak'                        '0.650789'

========================== row from database ==========================
                                              'id'  1442116
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-175 - Johnny Mathis - Teacher, Teacher.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  160
                                           'genre'  prerock-lounge
                                        'filesize'  6443130
                                           'mtime'  1642095509
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 175 prerock lounge
                                      'tag_artist'  Johnny Mathis
                                     'tag_release'  16 Most Requested Songs
                                       'tag_title'  Teacher, Teacher
                                             'bpm'  145.58
                                    'search_title'  'teacher':1,2
                                   'search_artist'  'johnny':1 'mathis':2
                                  'search_release'  'most':1 'requested':2 'songs':3
                                     'search_rest'  '00oldiepop':5 '175':8 '1958':6 '58':7 'country':4 'exotica':2 'jazz':1 'lounge':10 'oldies':3 'prerock':9
                                    'search_combo'  '00oldiepop':12 '175':15 '1958':13 '58':14 'country':11 'exotica':9 'jazz':8 'johnny':3B 'lounge':17 'mathis':4B 'most':5C 'oldies':10 'prerock':16 'requested':6C 'songs':7C 'teacher':1A,2A
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['oldies', '60s', 'male vocalists', 'pop', 'easy listening', 'christmas']
                                        'tag_date'  1958
                                     'discogstags'  ['pop', 'ballad', 'vocal']

============================== file details ==============================
                                           'mtime'  1642095509.2336047  (2022-01-13 18:38:29)
                             'size'  6443130