======================== unified (from filesystem) ========================
                                         'bitrate'  '234.971'
                                        'duration'  '195'
                                          'artist'  'Breathe Carolina'
                                     'text_people'  ''
                                         'release'  'Hello Fascination'
                                           'title'  'Velvet'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'emo', 'post hardcore', 'powerpop', 'screamo', 'electronic']"
                                     'discogstags'  "['electronic', 'rock', 'electro', 'post-hardcore', 'dubstep']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '13'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio'
                                             'bpm'  '101.4'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:http://www.cdtag.com:\x02\x00ê\x1d4\x00'      PRIV(owner='http://www.cdtag.com', data=b'\x02\x00\xea\x1d4\x00')
'TALB' (Album/Movie/Show title)                     'Hello Fascination'
'TBPM' (BPM (beats per minute))                     '101.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Velvet'
'TKEY' (Initial key)                                '2A'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'Breathe Carolina'
'TPUB' (Publisher)                                  'Fearless Records'
'TRCK' (Track number/Position in set)               '12/13'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 3.97'
'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:Release type'                                 'Normal'
'TXXX:Rip date'                                     '2009-08-17'
'TXXX:Ripping tool'                                 'EAC'
'TXXX:Source'                                       'CD (LP)'
'TXXX:discogstags'                                  ['electronic', 'rock', 'electro', 'post-hardcore', 'dubstep']
'TXXX:lastfmtags'                                   ['electronica', 'emo', 'post hardcore', 'powerpop', 'screamo', 'electronic']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.85 dB'
'TXXX:replaygain_track_peak'                        '0.346997'

========================== row from database ==========================
                                              'id'  723290
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Breathe Carolina   Hello Fascination/12 Velvet.mp3
                                         'working'  None
                                         'bitrate'  235
                                    'duration_sec'  195
                                           'genre'  electronic-generic or radio
                                        'filesize'  5947473
                                           'mtime'  1637329410
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 12 electronic generic or radio
                                      'tag_artist'  Breathe Carolina
                                     'tag_release'  Hello Fascination
                                       'tag_title'  Velvet
                                             'bpm'  101.4
                                    'search_title'  'velvet':1
                                   'search_artist'  'breathe':1 'carolina':2
                                  'search_release'  'fascination':2 'hello':1
                                     'search_rest'  'electronic':1 'generic':2 'or':3 'radio':4
                                    'search_combo'  'breathe':2B 'carolina':3B 'electronic':6 'fascination':5C 'generic':7 'hello':4C 'or':8 'radio':9 'velvet':1A
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'emo', 'post hardcore', 'powerpop', 'screamo', 'electronic']
                                        'tag_date'  2009
                                     'discogstags'  ['electronic', 'rock', 'electro', 'post-hardcore', 'dubstep']

============================== file details ==============================
                                           'mtime'  1637329410.1013522  (2021-11-19 14:43:30)
                             'size'  5947473