======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '207'
                                          'artist'  'Spike Jones'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'I Went to Your Wedding'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'comedy', 'humor', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '144.541'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '144.541'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TIT2' (Title/songname/content description)         'I Went to Your Wedding'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Spike Jones'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'comedy', 'humor', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.54 dB'
'TXXX:replaygain_track_peak'                        '0.430757'

========================== row from database ==========================
                                              'id'  1357484
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Spike Jones - I Went to Your Wedding.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  207
                                           'genre'  prerock-band
                                        'filesize'  3320071
                                           'mtime'  1620562003
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] prerock band
                                      'tag_artist'  Spike Jones
                                     'tag_release'  None
                                       'tag_title'  I Went to Your Wedding
                                             'bpm'  144.541
                                    'search_title'  'i':1 'to':3 'wedding':5 'went':2 'your':4
                                   'search_artist'  'jones':2 'spike':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'band':8 'files':5,6 'loose':3,4 'prerock':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':8 'band':15 'files':12,13 'i':1A 'jones':7B 'loose':10,11 'prerock':14 'spike':6B 'to':3A 'unsorted':9 'wedding':5A 'went':2A 'your':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', 'comedy', 'humor', 'swing']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562003.1834533  (2021-05-09 14:06:43)
                             'size'  3320071