======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '145'
                                          'artist'  'Billy Land'
                                     'text_people'  ''
                                         'release'  "Desperate Rock'N'Roll Vol. 14"
                                           'title'  'Shimmy Shake'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                     'discogstags'  "['rock & roll', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '141.6'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "Desperate Rock'N'Roll Vol. 14"
'TBPM' (BPM (beats per minute))                     '141.6'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TIT2' (Title/songname/content description)         'Shimmy Shake'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Land'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '05'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock & roll', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.42 dB'
'TXXX:replaygain_track_peak'                        '0.489400'

========================== row from database ==========================
                                              'id'  1534145
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/va - Desperate Rock_N_Roll Vol. 14/A5 - Billy Land - Shimmy Shake.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  145
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  2478865
                                           'mtime'  1622659490
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm va Rock_N_Roll A5 rock pop early rocknroll
                                      'tag_artist'  Billy Land
                                     'tag_release'  Desperate Rock'N'Roll Vol. 14
                                       'tag_title'  Shimmy Shake
                                             'bpm'  141.6
                                    'search_title'  'shake':2 'shimmy':1
                                   'search_artist'  'billy':1 'land':2
                                  'search_release'  'desperate':1 'n':3 'rock':2 'rocknroll':5 'roll':4 'vol':6,7
                                     'search_rest'  'a5':5 'early':8 'n':3 'pop':7 'rock':2,6 'rocknroll':9 'roll':4 'va':1
                                    'search_combo'  'a5':16 'billy':3B 'desperate':5C 'early':19 'land':4B 'n':7C,14 'pop':18 'rock':6C,13,17 'rocknroll':9C,20 'roll':8C,15 'shake':2A 'shimmy':1A 'va':12 'vol':10C,11C
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['rock & roll', 'rock']

============================== file details ==============================
                                           'mtime'  1622659490.032323  (2021-06-02 20:44:50)
                             'size'  2478865