======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '158'
                                          'artist'  'Carl Perkins'
                                     'text_people'  ''
                                         'release'  '100 Oldies Deel 34'
                                           'title'  'Right String But The Wrong Yo Yo'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-2', 'q-bass-1', '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-2']")
                                      'lastfmtags'  "['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'country', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '88'
                                      'tracktotal'  '100'
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '118.845'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '100 Oldies Deel 34'
'TBPM' (BPM (beats per minute))                     '118.845'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1955'
'TENC' (Encoded by)                                 'Mister X'
'TIT2' (Title/songname/content description)         'Right String But The Wrong Yo Yo'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Carl Perkins'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '88/100'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'country', '50s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.93 dB'
'TXXX:replaygain_track_peak'                        '0.468062'

========================== row from database ==========================
                                              'id'  1349794
                                            'path'  /data/Music/Bulk/00poprockelectronic/100 oldies deel 35/88 Carl Perkins - Right String But The Wrong Yo Yo.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  158
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  6824293
                                           'mtime'  1620565284
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic oldies deel 35 88 electronic generic or radio unsorted
                                      'tag_artist'  Carl Perkins
                                     'tag_release'  100 Oldies Deel 34
                                       'tag_title'  Right String But The Wrong Yo Yo
                                             'bpm'  118.845
                                    'search_title'  'but':3 'right':1 'string':2 'the':4 'wrong':5 'yo':6
                                   'search_artist'  'carl':1 'perkins':2
                                  'search_release'  '100':1 '34':4 'deel':3 'oldies':2
                                     'search_rest'  '00poprockelectronic':1 '35':4 '88':5 'deel':3 'electronic':6 'generic':7 'oldies':2 'or':8 'radio':9 'unsorted':10
                                    'search_combo'  '00poprockelectronic':13 '100':9C '34':12C '35':16 '88':17 'but':3A 'carl':7B 'deel':11C,15 'electronic':18 'generic':19 'oldies':10C,14 'or':20 'perkins':8B 'radio':21 'right':1A 'string':2A 'the':4A 'unsorted':22 'wrong':5A 'yo':6A
                                    'tag_tracknum'  88
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'rock n roll', 'rock and roll', 'rockabilly', 'country', '50s']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620565284.4055927  (2021-05-09 15:01:24)
                             'size'  6824293