======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '203'
                                          'artist'  'Wet Willie'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  "Keep On Smilin'"
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', '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'  "['southern rock', 'classic rock', '70s', 'rock', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '66'
                                      'tracktotal'  ''
                                            'date'  '1974'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '103.855'
                                             'key'  '10A'
                                        '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))                     '103.855'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1974'
'TIT2' (Title/songname/content description)         "Keep On Smilin'"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Wet Willie'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '66'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['southern rock', 'classic rock', '70s', 'rock', 'blues']
'TXXX:q-bass'                                       '3'
'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'                        '+0.43 dB'
'TXXX:replaygain_track_peak'                        '0.627388'

========================== row from database ==========================
                                              'id'  1517589
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1974/066 - Wet Willie - Keep On Smilin_.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  203
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  4074946
                                           'mtime'  1620385087
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1974 066 Smilin_ electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Wet Willie
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Keep On Smilin'
                                             'bpm'  103.855
                                    'search_title'  'keep':1 'on':2 'smilin':3,4
                                   'search_artist'  'wet':1 'willie':2
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1974':3 'billboard':14 'electronic':5 'generic':6 'or':7 'pl':13 'radio':8 'set':10,12 'smilin':4 'top100':2 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':13 '1':12C '1974':15 'billboard':7C,26 'electronic':17 'generic':18 'keep':1A 'of':11C 'on':2A 'or':19 'pl':25 'pop':9C 'radio':20 'set':22,24 'singles':10C 'smilin':3A,4A,16 'top':8C 'top100':14 'unsorted':21,23 'wet':5B 'willie':6B
                                    'tag_tracknum'  66
                                      'num_images'  0
                                             'key'  10A
                                           '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-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['southern rock', 'classic rock', '70s', 'rock', 'blues']
                                        'tag_date'  1974
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385086.9008756  (2021-05-07 12:58:06)
                             'size'  4074946