======================== unified (from filesystem) ========================
                                         'bitrate'  '172.722'
                                        'duration'  '219'
                                          'artist'  'Mr. Review'
                                     'text_people'  ''
                                         'release'  'Lock, Stock & Barrel'
                                           'title'  'Summertime'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'Q-PLAY-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ska punk', 'third wave ska', 'ska', 'dutch']"
                                     'discogstags'  "['reggae', 'ska']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-unsorted'
                                             'bpm'  '102.905'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lock, Stock & Barrel'
'TBPM' (BPM (beats per minute))                     '102.905'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-unsorted'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Summertime'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mr. Review'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['reggae', 'ska']
'TXXX:lastfmtags'                                   ['ska punk', 'third wave ska', 'ska', 'dutch']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.60 dB'
'TXXX:replaygain_track_peak'                        '0.602563'

========================== row from database ==========================
                                              'id'  1214604
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Soul/Mr. Review - Summertime.mp3
                                         'working'  None
                                         'bitrate'  172
                                    'duration_sec'  219
                                           'genre'  loc-style-reggae or dub or ska or dancehall-unsorted
                                        'filesize'  4732322
                                           'mtime'  1620520492
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Soul loc style reggae or dub or ska or dancehall unsorted
                                      'tag_artist'  Mr. Review
                                     'tag_release'  Lock, Stock & Barrel
                                       'tag_title'  Summertime
                                             'bpm'  102.905
                                    'search_title'  'summertime':1
                                   'search_artist'  'mr':1,2 'review':3
                                  'search_release'  'barrel':4 'lock':1,2 'stock':3
                                     'search_rest'  'country':4 'dancehall':12 'dub':10 'exotica':2 'jazz':1 'loc':6 'oldies':3 'or':9 'reggae':8 'ska':11 'soul':5 'style':7 'unsorted':13
                                    'search_combo'  'barrel':8C 'country':12 'dancehall':20 'dub':18 'exotica':10 'jazz':9 'loc':14 'lock':5C,6C 'mr':2B,3B 'oldies':11 'or':17 'reggae':16 'review':4B 'ska':19 'soul':13 'stock':7C 'style':15 'summertime':1A 'unsorted':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['ska punk', 'third wave ska', 'ska', 'dutch']
                                        'tag_date'  1994
                                     'discogstags'  ['reggae', 'ska']

============================== file details ==============================
                                           'mtime'  1620520492.1315718  (2021-05-09 02:34:52)
                             'size'  4732322