======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '167'
                                          'artist'  'Perry Como'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '171 Have I stayed away too long - Perry Como (15-01-1944)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'male vocalists', 'jazz', '50s', 'easy listening', 'christmas']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '171'
                                      'tracktotal'  ''
                                            'date'  '1944'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-easy'
                                             'bpm'  '138.229'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '138.229'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-easy'
'TDRC' (Recording time)                             '1944'
'TIT2' (Title/songname/content description)         '171 Have I stayed away too long - Perry Como (15-01-1944)'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Perry Como'
'TRCK' (Track number/Position in set)               '171'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'male vocalists', 'jazz', '50s', 'easy listening', 'christmas']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.76 dB'
'TXXX:replaygain_track_peak'                        '0.353136'

========================== row from database ==========================
                                              'id'  1455503
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/171 Have I stayed away too long - Perry Como (15-01-1944).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  167
                                           'genre'  prerock-vocal-easy
                                        'filesize'  2690008
                                           'mtime'  1621625749
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1943 prerock vocal easy
                                      'tag_artist'  Perry Como
                                     'tag_release'  None
                                       'tag_title'  171 Have I stayed away too long - Perry Como (15-01-1944)
                                             'bpm'  138.229
                                    'search_title'  '01':11 '15':10 '15011944':13 '171':1 '1944':12 'away':5 'como':9 'have':2 'i':3 'long':7 'perry':8 'stayed':4 'too':6
                                   'search_artist'  'como':2 'perry':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1943':6 'country':4 'easy':9 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'vocal':8
                                    'search_combo'  '00oldiepop':20 '01':11A '15':10A '15011944':13A '171':1A '1943':21 '1944':12A 'away':5A 'como':9A,15B 'country':19 'easy':24 'exotica':17 'have':2A 'i':3A 'jazz':16 'long':7A 'oldies':18 'perry':8A,14B 'prerock':22 'stayed':4A 'too':6A 'vocal':23
                                    'tag_tracknum'  171
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['oldies', 'male vocalists', 'jazz', '50s', 'easy listening', 'christmas']
                                        'tag_date'  1944
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625748.8410566  (2021-05-21 21:35:48)
                             'size'  2690008