<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '231'
                                          'artist'  'The Knife'
                                     'text_people'  ''
                                         'release'  'Deep Cuts'
                                           'title'  'Heartbeats'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-4', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['swedish', 'electronica', 'poptron', 'electronic', 'synthpop']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '17'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-we-electropop or synthpop;set-pl-sced'
                                             'bpm'  '88'
                                             'key'  '6B'
                                        'acoustid'  '54f812a8-6c24-492a-9465-6ca7d8c5df7c'
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f9537d819d0>

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''<br/>                                     <img style="width:150px" src="image?fid=1456068"/>
'PRIV:AverageLevel:o#\x00\x00'                      PRIV(owner='AverageLevel', data=b'o#\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Deep Cuts'
'TBPM' (BPM (beats per minute))                     '88'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-we-electropop or synthpop', 'set-pl-sced']
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2005-01-18'
'TIT2' (Title/songname/content description)         'Heartbeats'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Knife'
'TPE2' (Band/orchestra/accompaniment)               'The Knife'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '1/17'
'TSO2'                                              'Knife, The'
'TSOP' (Performer sort order)                       'Knife, The'
'TSRC' (ISRC (international standard recording code))  'SEWCE0400201'
'TXXX:ASIN'                                         'B0007UT5QI'
'TXXX:Acoustid Id'                                  '54f812a8-6c24-492a-9465-6ca7d8c5df7c'
'TXXX:Artists'                                      'The Knife'
'TXXX:MusicBrainz Album Artist Id'                  'bf710b71-48e5-4e15-9bd6-96debb2e4e98'
'TXXX:MusicBrainz Album Id'                         '6a72742c-87d6-465a-8c48-f536db1feaa0'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'bf710b71-48e5-4e15-9bd6-96debb2e4e98'
'TXXX:MusicBrainz Release Group Id'                 'e35a847b-d4cb-3dfe-b2ea-047f8fe0d95b'
'TXXX:MusicBrainz Release Track Id'                 'cc5e6513-d9e0-3bd8-8d38-dd167ee4230b'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['swedish', 'electronica', 'poptron', 'electronic', 'synthpop']
'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '4'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.05 dB'
'TXXX:replaygain_track_peak'                        '0.422714'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'db4c9220-df76-4b42-b6f5-8bf52cc80f77')
'USLT::XXX'                                         ('One night to be confused\n'
 'One night to speed up truth\n'
 'We had a promise paid\n'
 'Four hands and then away\n'
 '\n'
 'Both under influence\n'
 'We had divine sense\n'
 'To know what to say\n'
 'Mind as a razorblade\n'
 '\n'
 'To call for hands of above\n'
 'To lean on\n'
 "Wouldn't be good enough\n"
 'For me, no\n'
 '\n'
 'One night of magic rush\n'
 'The start of simple touch\n'
 'One night to push and scream\n'
 'And then relief\n'
 '\n'
 'Ten days of perfect tunes\n'
 'The colors red and blue\n'
 'We had a promise made\n'
 'We were in love\n'
 '\n'
 'To call for hands of above\n'
 'To lean on\n'
 "Wouldn't be good enough\n"
 'For me, no\n'
 '\n'
 'To call for hands of above\n'
 'To lean on\n'
 "Wouldn't be good enough\n"
 'For me, no\n'
 '\n'
 'And you, you knew the hand of the devil\n'
 'And you, kept us awake with wolves teeth\n'
 'Sharing different heartbeats\n'
 'In one night\n'
 '\n'
 'To call for hands of above\n'
 'To lean on\n'
 "Wouldn't be good enough\n"
 'For me, no\n'
 '\n'
 'To call for hands of above\n'
 'To lean on\n'
 "Wouldn't be good enough\n"
 'For me, no')

========================== row from database ==========================
                                              'id'  1456068
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Knife/Deep Cuts (2003)/01-Heartbeats.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  231
                                           'genre'  electronic-we-electropop or synthpop;set-pl-sced
                                        'filesize'  3712579
                                           'mtime'  1647348514
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic (2003) 01 electronic we electropop or synthpop;set pl sced
                                      'tag_artist'  The Knife
                                     'tag_release'  Deep Cuts
                                       'tag_title'  Heartbeats
                                             'bpm'  88.0
                                    'search_title'  'heartbeats':1
                                   'search_artist'  'knife':2 'the':1
                                  'search_release'  'cuts':2 'deep':1
                                     'search_rest'  '00poprockelectronic':1 '2003':2,3 'electronic':4 'electropop':6 'or':7 'pl':12 'sced':13 'set':9,11 'synthpop':8,10 'we':5
                                    'search_combo'  '00poprockelectronic':6 '2003':7,8 'cuts':5C 'deep':4C 'electronic':9 'electropop':11 'heartbeats':1A 'knife':3B 'or':12 'pl':17 'sced':18 'set':14,16 'synthpop':13,15 'the':2B 'we':10
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-4', 'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']
                                      'lastfmtags'  ['swedish', 'electronica', 'poptron', 'electronic', 'synthpop']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1647348514.4125774  (2022-03-15 13:48:34)
                             'size'  3712579