======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '408'
                                          'artist'  'Billy Cobham'
                                     'text_people'  ''
                                         'release'  'Blaxploitation (Disc 1)'
                                           'title'  "Stratus ('81)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', '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-2']")
                                      'lastfmtags'  "['fip', 'jazz fusion', 'jazz', 'fusion', 'drums', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '111.0'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Blaxploitation (Disc 1)'
'TBPM' (BPM (beats per minute))                     '111.0'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         "Stratus ('81)"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Cobham'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '09'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['fip', 'jazz fusion', 'jazz', 'fusion', 'drums', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-5.67 dB'
'TXXX:replaygain_track_peak'                        '1.014889'

========================== row from database ==========================
                                              'id'  1527746
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/Billy Cobham - Stratus (_81).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  408
                                           'genre'  funk or soul
                                        'filesize'  16436014
                                           'mtime'  1628357800
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY Instr 70_s (_81) funk or soul
                                      'tag_artist'  Billy Cobham
                                     'tag_release'  Blaxploitation (Disc 1)
                                       'tag_title'  Stratus ('81)
                                             'bpm'  111.0
                                    'search_title'  '81':2,3 'stratus':1
                                   'search_artist'  'billy':1 'cobham':2
                                  'search_release'  '1':4,5 'blaxploitation':1 'disc':2,3
                                     'search_rest'  '70':6 '81':8,9 'easy':4 'funk':2 'instr':5 'or':10 's':7 'soul':3 'swing':1
                                    'search_combo'  '1':9C,10C '70':16 '81':2A,3A,18,19 'billy':4B 'blaxploitation':6C 'cobham':5B 'disc':7C,8C 'easy':14 'funk':12 'instr':15 'or':20 's':17 'soul':13 'stratus':1A 'swing':11
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['fip', 'jazz fusion', 'jazz', 'fusion', 'drums', 'funk']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357799.90436  (2021-08-07 19:36:39)
                             'size'  16436014