======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '221'
                                          'artist'  'Arctic Monkeys'
                                     'text_people'  ''
                                         'release'  "You Can't Judge a Song By Its Cover"
                                           'title'  "You Know I'm No Good (Amy Winehouse)"
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alternative', 'british', 'indie rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'set-cover or covered-styled;set-cover or covered'
                                             'bpm'  '116.587'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'POPM:no@email'                                     POPM(email='no@email', rating=186, count=0)
'TALB' (Album/Movie/Show title)                     "You Can't Judge a Song By Its Cover"
'TBPM' (BPM (beats per minute))                     '116.587'
'TCON' (Content type, a.k.a. Genre)                 ['set-cover or covered-styled', 'set-cover or covered']
'TIT2' (Title/songname/content description)         "You Know I'm No Good (Amy Winehouse)"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Arctic Monkeys'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:DATE'                                         '2007'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'british', 'indie rock', 'rock']
'TXXX:original release date'                        '2007'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-2.33 dB'
'TXXX:replaygain_track_peak'                        '0.434765'

========================== row from database ==========================
                                              'id'  1532241
                                            'path'  /data/Music/Bulk/00poprockelectronic/you can_t judge a song by its cover/-00-Arctic Monkeys-You Know I_m No Good (Amy Winehouse).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  221
                                           'genre'  set-cover or covered-styled;set-cover or covered
                                        'filesize'  8847232
                                           'mtime'  1638540235
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic you can_t judge song by its cover 00 I_m set cover or covered styled;set cover or covered
                                      'tag_artist'  Arctic Monkeys
                                     'tag_release'  You Can't Judge a Song By Its Cover
                                       'tag_title'  You Know I'm No Good (Amy Winehouse)
                                             'bpm'  116.587
                                    'search_title'  'amy':8,9 'good':7 'i':3 'im':5 'know':2 'm':4 'no':6 'winehouse':10,11 'you':1
                                   'search_artist'  'arctic':1 'monkeys':2
                                  'search_release'  'a':6 'by':8 'can':2 'cant':4 'cover':10 'its':9 'judge':5 'song':7 't':3 'you':1
                                     'search_rest'  '00':10 '00poprockelectronic':1 'by':7 'can':3 'cover':9 'covered':15 'i':11 'its':8 'judge':5 'm':12 'or':14 'set':13,17,19 'song':6 'styled':16,18 't':4 'you':2
                                    'search_combo'  '00':33 '00poprockelectronic':24 'a':19C 'amy':8A,9A 'arctic':12B 'by':21C,30 'can':15C,26 'cant':17C 'cover':23C,32 'covered':38 'good':7A 'i':3A,34 'im':5A 'its':22C,31 'judge':18C,28 'know':2A 'm':4A,35 'monkeys':13B 'no':6A 'or':37 'set':36,40,42 'song':20C,29 'styled':39,41 't':16C,27 'winehouse':10A,11A 'you':1A,14C,25
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'british', 'indie rock', 'rock']
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1638540234.8017588  (2021-12-03 15:03:54)
                             'size'  8847232