======================== unified (from filesystem) ========================
                                         'bitrate'  '196.727'
                                        'duration'  '495'
                                          'artist'  'Mono/Poly'
                                     'text_people'  ''
                                         'release'  'Paramatma'
                                           'title'  'Lets Take A Trip'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronic', 'hip-hop', 'beats', 'experimental', 'underground hip-hop']"
                                     'discogstags'  "['electronic', 'freestyle', 'dubstep', 'hip hop', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  '19'
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '92.2'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Paramatma'
'TBPM' (BPM (beats per minute))                     '92.2'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Lets Take A Trip'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mono/Poly'
'TPE2' (Band/orchestra/accompaniment)               'Mono/Poly'
'TRCK' (Track number/Position in set)               '17/19'
'TXXX:Encoding Params'                              'vers'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'freestyle', 'dubstep', 'hip hop', 'experimental']
'TXXX:iTunes_CDDB_1'                                '31108813+317570+19+150+8204+21286+34891+50740+71340+83739+96167+140086+165924+184397+209994+223680+239845+244727+251153+260540+297709+309748'
'TXXX:iTunes_CDDB_TrackNumber'                      '17'
'TXXX:lastfmtags'                                   ['electronic', 'hip-hop', 'beats', 'experimental', 'underground hip-hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.45 dB'
'TXXX:replaygain_track_peak'                        '0.586525'
'TXXX:tempo'                                        '00000 BPM'

========================== row from database ==========================
                                              'id'  1109922
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/MonoPoly/Paramatma/17 Lets Take A Trip.mp3
                                         'working'  None
                                         'bitrate'  196
                                    'duration_sec'  495
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  12555133
                                           'mtime'  1620526773
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm MonoPoly 17 hip hop or rnb or rap or turntablism
                                      'tag_artist'  Mono/Poly
                                     'tag_release'  Paramatma
                                       'tag_title'  Lets Take A Trip
                                             'bpm'  92.2
                                    'search_title'  'a':3 'lets':1 'take':2 'trip':4
                                   'search_artist'  'mono':1 'monopoly':3 'poly':2
                                  'search_release'  'paramatma':1
                                     'search_rest'  'hip':2 'hop':3 'mono':8 'monopoly':1 'or':4 'poly':9 'rap':6 'rnb':5 'turntablism':7
                                    'search_combo'  'a':3A 'hip':10 'hop':11 'lets':1A 'mono':5B,16 'monopoly':7B,9 'or':12 'paramatma':8C 'poly':6B,17 'rap':14 'rnb':13 'take':2A 'trip':4A 'turntablism':15
                                    'tag_tracknum'  17
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'hip-hop', 'beats', 'experimental', 'underground hip-hop']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic', 'freestyle', 'dubstep', 'hip hop', 'experimental']

============================== file details ==============================
                                           'mtime'  1620526773.279911  (2021-05-09 04:19:33)
                             'size'  12555133