======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '345'
                                          'artist'  "Dr Buzzard's Original Savannah"
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Whispering-Cherchez La Femme-S'
                                           'quals'  ("['Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['disco', 'soul', 'funk', '70s', 'djmfmylovedmusic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '91'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '114.868'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1'
'TBPM' (BPM (beats per minute))                     '114.868'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Whispering-Cherchez La Femme-S'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               "Dr Buzzard's Original Savannah"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '91'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['disco', 'soul', 'funk', '70s', 'djmfmylovedmusic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.71 dB'
'TXXX:replaygain_track_peak'                        '0.707327'

========================== row from database ==========================
                                              'id'  1519410
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1977/091 - Dr Buzzard_s Original Savannah Band - Whispering-Cherch.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  345
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  6921838
                                           'mtime'  1620385172
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1977 091 Buzzard_s Band electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Dr Buzzard's Original Savannah
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Whispering-Cherchez La Femme-S
                                             'bpm'  114.868
                                    'search_title'  'cherchez':2 'femme':5 'femmes':7 'la':4 's':6 'whispering':1 'whisperingcherchez':3
                                   'search_artist'  'buzzard':2 'buzzards':4 'dr':1 'original':5 's':3 'savannah':6
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1977':3 'band':6 'billboard':16 'buzzard':4 'electronic':7 'generic':8 'or':9 'pl':15 'radio':10 's':5 'set':12,14 'top100':2 'unsorted':11,13
                                    'search_combo'  '00poprockelectronic':20 '1':19C '1977':22 'band':25 'billboard':14C,35 'buzzard':9B,23 'buzzards':11B 'cherchez':2A 'dr':8B 'electronic':26 'femme':5A 'femmes':7A 'generic':27 'la':4A 'of':18C 'or':28 'original':12B 'pl':34 'pop':16C 'radio':29 's':6A,10B,24 'savannah':13B 'set':31,33 'singles':17C 'top':15C 'top100':21 'unsorted':30,32 'whispering':1A 'whisperingcherchez':3A
                                    'tag_tracknum'  91
                                      'num_images'  0
                                             'key'  9A
                                           '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-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['disco', 'soul', 'funk', '70s', 'djmfmylovedmusic']
                                        'tag_date'  1977
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385171.6635203  (2021-05-07 12:59:31)
                             'size'  6921838