======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '308'
                                          'artist'  'Blue Öyster Cult'
                                     'text_people'  ''
                                         'release'  "A Series 25 Years of Rock'n'Roll-1978"
                                           'title'  "Don't Fear the Reaper"
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-unsorted;eid-metal;rock-cppex'
                                             'bpm'  '141.118'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "A Series 25 Years of Rock'n'Roll-1978"
'TBPM' (BPM (beats per minute))                     '141.118'
'TCON' (Content type, a.k.a. Genre)                 ['rock-unsorted', 'eid-metal', 'rock-cppex']
'TIT2' (Title/songname/content description)         "Don't Fear the Reaper"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Blue Öyster Cult'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.46 dB'
'TXXX:replaygain_track_peak'                        '0.585483'

========================== row from database ==========================
                                              'id'  1498654
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Blue Oyster Cult__MBZ;#Blue Oyster Cult;#A Series 25 Years of Rock_n_Roll-1978;#02;#Don_t Fear the Reaper.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  308
                                           'genre'  rock-unsorted;eid-metal;rock-cppex
                                        'filesize'  7417480
                                           'mtime'  1620737406
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Oyster Cult__MBZ;#Blue Oyster Cult;#A Rock_n_Roll 1978;#02;#Don_t rock unsorted;eid metal;rock cppex
                                      'tag_artist'  Blue Öyster Cult
                                     'tag_release'  A Series 25 Years of Rock'n'Roll-1978
                                       'tag_title'  Don't Fear the Reaper
                                             'bpm'  141.118
                                    'search_title'  'don':1 'dont':3 'fear':4 'reaper':6 't':2 'the':5
                                   'search_artist'  'blue':1 'cult':4 'oyster':2,3
                                  'search_release'  '1978':9 '25':3 'a':1 'n':7 'of':5 'rock':6 'rocknroll1978':10 'roll':8 'series':2 'years':4
                                     'search_rest'  '00poprockelectronic':1 '02':22,26 '1978':21,25 'a':15,17 'blue':10,13 'cppex':38 'cult':8,11,14,16 'don':23,27 'eid':31,33 'files':5,6 'loose':3,4 'mbz':9,12 'metal':34,36 'n':19 'oyster':7 'rock':18,29,35,37 'roll':20 't':24,28 'unsorted':2,30,32
                                    'search_combo'  '00poprockelectronic':21 '02':42,46 '1978':19C,41,45 '25':13C 'a':11C,35,37 'blue':7B,30,33 'cppex':58 'cult':10B,28,31,34,36 'don':1A,43,47 'dont':3A 'eid':51,53 'fear':4A 'files':25,26 'loose':23,24 'mbz':29,32 'metal':54,56 'n':17C,39 'of':15C 'oyster':8B,9B,27 'reaper':6A 'rock':16C,38,49,55,57 'rocknroll1978':20C 'roll':18C,40 'series':12C 't':2A,44,48 'the':5A 'unsorted':22,50,52 'years':14C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
                                        'tag_date'  
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737406.4209735  (2021-05-11 14:50:06)
                             'size'  7417480