======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '300'
                                          'artist'  'Bon Jovi'
                                     'text_people'  ''
                                         'release'  'These Days'
                                           'title'  "This Ain't a Love Song"
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'hair metal', 'hard rock', 'rock']"
                                     'discogstags'  "['rock', 'hard rock', 'arena rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '119.405'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Love'
'TALB' (Album/Movie/Show title)                     'These Days'
'TBPM' (BPM (beats per minute))                     '119.405'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         "This Ain't a Love Song"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bon Jovi'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'hard rock', 'arena rock']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'hair metal', 'hard rock', 'rock']
'TXXX:q-bass'                                       '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.96 dB'
'TXXX:replaygain_track_peak'                        '0.490181'

========================== row from database ==========================
                                              'id'  1307767
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0232 Bon Jovi - These Days__CD 1__cifs39ad.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  300
                                           'genre'  rock-unsorted
                                        'filesize'  4807538
                                           'mtime'  1620392551
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0232 Days__CD 1__cifs39ad rock unsorted
                                      'tag_artist'  Bon Jovi
                                     'tag_release'  These Days
                                       'tag_title'  This Ain't a Love Song
                                             'bpm'  119.405
                                    'search_title'  'a':5 'ain':2 'aint':4 'love':6 'song':7 't':3 'this':1
                                   'search_artist'  'bon':1 'jovi':2
                                  'search_release'  'days':2 'these':1
                                     'search_rest'  '00poprockelectronic':1 '0232':5 '1':8 '1000':4 'album':2 'cd':7 'cifs39ad':9 'days':6 'rock':10 'top':3 'unsorted':11
                                    'search_combo'  '00poprockelectronic':12 '0232':16 '1':19 '1000':15 'a':5A 'ain':2A 'aint':4A 'album':13 'bon':8B 'cd':18 'cifs39ad':20 'days':11C,17 'jovi':9B 'love':6A 'rock':21 'song':7A 't':3A 'these':10C 'this':1A 'top':14 'unsorted':22
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'hair metal', 'hard rock', 'rock']
                                        'tag_date'  1995
                                     'discogstags'  ['rock', 'hard rock', 'arena rock']

============================== file details ==============================
                                           'mtime'  1620392550.9882743  (2021-05-07 15:02:30)
                             'size'  4807538