======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '190'
                                          'artist'  'Ry Cooder'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Tampa Red - Boogie Woogie Dance'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['guitar', 'blues', 'rock', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '108.938'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '108.938'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Tampa Red - Boogie Woogie Dance'
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '190641'
'TPE1' (Lead performer(s)/Soloist(s))               'Ry Cooder'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['guitar', 'blues', 'rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.97 dB'
'TXXX:replaygain_track_peak'                        '0.420712'

========================== row from database ==========================
                                              'id'  1523568
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/tampa red_s hokum jug band - boogie woogie dance.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  190
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3065859
                                           'mtime'  1620527939
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection tampa red_s hokum jug band boogie woogie dance prerock jb jazz unsorted
                                      'tag_artist'  Ry Cooder
                                     'tag_release'  None
                                       'tag_title'  Tampa Red - Boogie Woogie Dance
                                             'bpm'  108.938
                                    'search_title'  'boogie':3 'dance':5 'red':2 'tampa':1 'woogie':4
                                   'search_artist'  'cooder':2 'ry':1
                                  'search_release'  
                                     'search_rest'  '30':5 'band':13 'boogie':14 'collection':7 'country':4 'dance':16 'exotica':2 'hokum':11 'jazz':1 'jb':18 'jug':12 'oldies':3 'prerock':17 'red':9 's':6,10 'tampa':8 'unsorted':19 'woogie':15
                                    'search_combo'  '30':12 'band':20 'boogie':3A,21 'collection':14 'cooder':7B 'country':11 'dance':5A,23 'exotica':9 'hokum':18 'jazz':8 'jb':25 'jug':19 'oldies':10 'prerock':24 'red':2A,16 'ry':6B 's':13,17 'tampa':1A,15 'unsorted':26 'woogie':4A,22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['guitar', 'blues', 'rock', 'folk', 'singer songwriter']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527938.6396885  (2021-05-09 04:38:58)
                             'size'  3065859