======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '444'
                                          'artist'  'The Jimmy Castor Bunch'
                                     'text_people'  ''
                                         'release'  "It's Just Begun"
                                           'title'  ' L.t.d. (Life, Truth, & Death)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['funky', 'jazz', 'soul', 'funk', '70s']"
                                     'discogstags'  "['funk / soul', 'funk', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '135.5'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "It's Just Begun"
'TBPM' (BPM (beats per minute))                     '135.5'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TIT2' (Title/songname/content description)         ' L.t.d. (Life, Truth, & Death)'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Jimmy Castor Bunch'
'TPE2' (Band/orchestra/accompaniment)               'The Jimmy Castor Bunch'
'TRCK' (Track number/Position in set)               '6'
'TXXX:DATE'                                         '1972'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['funk / soul', 'funk', 'soul']
'TXXX:lastfmtags'                                   ['funky', 'jazz', 'soul', 'funk', '70s']
'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'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+4.21 dB'
'TXXX:replaygain_track_peak'                        '1.228876'

========================== row from database ==========================
                                              'id'  1523346
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/jimmy castor bunch - 1972 it_s just begun/b1 - jimmy castor bunch -  l.t.d. (life, truth, & death).mp3.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  444
                                           'genre'  funk or soul-funk
                                        'filesize'  10666494
                                           'mtime'  1620665730
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul jimmy castor bunch 1972 it_s just begun b1 jimmy castor bunch l.t.d. (life, truth, death).mp3 funk soul funk
                                      'tag_artist'  The Jimmy Castor Bunch
                                     'tag_release'  It's Just Begun
                                       'tag_title'   L.t.d. (Life, Truth, & Death)
                                             'bpm'  135.5
                                    'search_title'  'd':3 'death':9,10 'l':1 'life':5,6 'ltd':4 't':2 'truth':7,8
                                   'search_artist'  'bunch':4 'castor':3 'jimmy':2 'the':1
                                  'search_release'  'begun':5 'it':1 'its':3 'just':4 's':2
                                     'search_rest'  '1972':7 'b1':12 'begun':11 'bunch':6 'castor':5 'd':15 'death':21 'deathmp3':23 'funk':2 'it':8 'jimmy':4 'just':10 'l':13 'life':17,18 'ltd':16 'mp3':22 's':9 'soul':3 'swing':1 't':14 'truth':19,20
                                    'search_combo'  '1972':26 'b1':31 'begun':19C,30 'bunch':14B,25 'castor':13B,24 'd':3A,34 'death':9A,10A,40 'deathmp3':42 'funk':21 'it':15C,27 'its':17C 'jimmy':12B,23 'just':18C,29 'l':1A,32 'life':5A,6A,36,37 'ltd':4A,35 'mp3':41 's':16C,28 'soul':22 'swing':20 't':2A,33 'the':11B 'truth':7A,8A,38,39
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funky', 'jazz', 'soul', 'funk', '70s']
                                        'tag_date'  1972
                                     'discogstags'  ['funk / soul', 'funk', 'soul']

============================== file details ==============================
                                           'mtime'  1620665729.524339  (2021-05-10 18:55:29)
                             'size'  10666494