======================== unified (from filesystem) ========================
                                         'bitrate'  '217.882'
                                        'duration'  '213'
                                          'artist'  'Smash Mouth'
                                     'text_people'  ''
                                         'release'  'Astro Lounge'
                                           'title'  "Who's There"
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'ska', 'pop', 'rock']"
                                     'discogstags'  "['rock', 'alternative rock', 'pop rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '108.297'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Astro Lounge'
'TBPM' (BPM (beats per minute))                     '108.297'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         "Who's There"
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Smash Mouth'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'alternative rock', 'pop rock', 'indie rock']
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative', 'ska', 'pop', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.24 dB'
'TXXX:replaygain_track_peak'                        '0.329597'

========================== row from database ==========================
                                              'id'  1516364
                                            'path'  /data/Music/Bulk/00poprockelectronic/00dnb/Smash Mouth/Smash Mouth__Astro Lounge__MBZ;#Smash Mouth;#Astro Lounge;#01;#Who_s There.mp3
                                         'working'  None
                                         'bitrate'  217
                                    'duration_sec'  213
                                           'genre'  rock-unsorted
                                        'filesize'  5822104
                                           'mtime'  1620389064
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00dnb Mouth__Astro Lounge__MBZ;#Smash Mouth;#Astro Lounge;#01;#Who_s rock unsorted
                                      'tag_artist'  Smash Mouth
                                     'tag_release'  Astro Lounge
                                       'tag_title'  Who's There
                                             'bpm'  108.297
                                    'search_title'  's':2 'there':4 'who':1 'whos':3
                                   'search_artist'  'mouth':2 'smash':1
                                  'search_release'  'astro':1 'lounge':2
                                     'search_rest'  '00dnb':2 '00poprockelectronic':1 '01':14,18 'astro':4,12 'lounge':5,8,13,17 'mbz':6,9 'mouth':3,11 'rock':21 's':16,20 'smash':7,10 'unsorted':22 'who':15,19
                                    'search_combo'  '00dnb':10 '00poprockelectronic':9 '01':22,26 'astro':7C,12,20 'lounge':8C,13,16,21,25 'mbz':14,17 'mouth':6B,11,19 'rock':29 's':2A,24,28 'smash':5B,15,18 'there':4A 'unsorted':30 'who':1A,23,27 'whos':3A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'ska', 'pop', 'rock']
                                        'tag_date'  1999
                                     'discogstags'  ['rock', 'alternative rock', 'pop rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1620389064.2767947  (2021-05-07 14:04:24)
                             'size'  5822104