======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '322'
                                          'artist'  'The Allman Brothers Band'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Whipping Post'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['blues rock', 'southern rock', 'rock', 'blues', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-blues'
                                             'bpm'  '130.063'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '130.063'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-blues'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Whipping Post'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Allman Brothers Band'
'TPE2' (Band/orchestra/accompaniment)               'The Allman Brothers Band'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues rock', 'southern rock', 'rock', 'blues', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                        '+0.94 dB'
'TXXX:replaygain_track_peak'                        '0.587459'

========================== row from database ==========================
                                              'id'  1360785
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/The Allman Brothers Band - Whipping Post [].mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  322
                                           'genre'  rock-pop-early-blues
                                        'filesize'  7750208
                                           'mtime'  1620736765
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] [] rock pop early blues
                                      'tag_artist'  The Allman Brothers Band
                                     'tag_release'  None
                                       'tag_title'  Whipping Post
                                             'bpm'  130.063
                                    'search_title'  'post':2 'whipping':1
                                   'search_artist'  'allman':2 'band':4 'brothers':3 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'blues':10 'early':9 'files':5,6 'loose':3,4 'pop':8 'rock':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 'allman':4B 'band':6B 'blues':16 'brothers':5B 'early':15 'files':11,12 'loose':9,10 'pop':14 'post':2A 'rock':13 'the':3B 'unsorted':8 'whipping':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues rock', 'southern rock', 'rock', 'blues', 'classic rock']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736765.075302  (2021-05-11 14:39:25)
                             'size'  7750208