======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '104'
                                          'artist'  'Strong Bad'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Everybody to the Limit'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['funny', 'homestar runner', 'comedy', 'awesome', 'podcast']"
                                     'discogstags'  "['pop rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '109.943'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '109.943'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Everybody to the Limit'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Strong Bad'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop rock', 'rock']
'TXXX:lastfmtags'                                   ['funny', 'homestar runner', 'comedy', 'awesome', 'podcast']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.82 dB'
'TXXX:replaygain_track_peak'                        '0.396449'

========================== row from database ==========================
                                              'id'  1297506
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/MBZ;#Strong Bad;#[non-album tracks];#01;#Everybody to the Limit.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  104
                                           'genre'  electronic-unsorted
                                        'filesize'  1671805
                                           'mtime'  1620572880
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] MBZ;#Strong Bad;#[non album tracks];#01;#Everybody electronic unsorted
                                      'tag_artist'  Strong Bad
                                     'tag_release'  None
                                       'tag_title'  Everybody to the Limit
                                             'bpm'  109.943
                                    'search_title'  'everybody':1 'limit':4 'the':3 'to':2
                                   'search_artist'  'bad':2 'strong':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '01':17,20 'album':15 'bad':11,13 'electronic':22 'everybody':18,21 'files':5,6 'loose':3,4 'mbz':7,9 'non':12,14 'strong':8,10 'tracks':16,19 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 '01':23,26 'album':21 'bad':6B,17,19 'electronic':28 'everybody':1A,24,27 'files':11,12 'limit':4A 'loose':9,10 'mbz':13,15 'non':18,20 'strong':5B,14,16 'the':3A 'to':2A 'tracks':22,25 'unsorted':8
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['funny', 'homestar runner', 'comedy', 'awesome', 'podcast']
                                        'tag_date'  2003
                                     'discogstags'  ['pop rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620572879.9371157  (2021-05-09 17:07:59)
                             'size'  1671805