======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '34'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  "1950's Radio Station And Advertising Jingles"
                                           'title'  'Columbia Tv Service Company Ad'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials'
                                             'bpm'  '141.8'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "1950's Radio Station And Advertising Jingles"
'TBPM' (BPM (beats per minute))                     '141.8'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-commercials'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Columbia Tv Service Company Ad'
'TKEY' (Initial key)                                '7A'
'TLEN' (Length)                                     '34727'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.40 dB'
'TXXX:replaygain_track_peak'                        '0.345530'

========================== row from database ==========================
                                              'id'  1530325
                                            'path'  /data/Music/Bulk/0nonmusic/1950_s Radio Station And Advertising Jingles/Columbia_TV_Service_Company_Ad.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  34
                                           'genre'  nonmusic-commercials
                                        'filesize'  835584
                                           'mtime'  1620525557
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 1950_s Columbia_TV_Service_Company_Ad nonmusic commercials
                                      'tag_artist'  [unknown]
                                     'tag_release'  1950's Radio Station And Advertising Jingles
                                       'tag_title'  Columbia Tv Service Company Ad
                                             'bpm'  141.8
                                    'search_title'  'ad':5 'columbia':1 'company':4 'service':3 'tv':2
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '1950':1 '1950s':3 'advertising':7 'and':6 'jingles':8 'radio':4 's':2 'station':5
                                     'search_rest'  '0nonmusic':1 '1950':2 'ad':8 'columbia':4 'commercials':10 'company':7 'nonmusic':9 's':3 'service':6 'tv':5
                                    'search_combo'  '0nonmusic':16 '1950':8C,17 '1950s':10C 'ad':5A,23 'advertising':14C 'and':13C 'columbia':1A,19 'commercials':25 'company':4A,22 'jingles':15C 'nonmusic':24 'radio':11C 's':9C,18 'service':3A,21 'station':12C 'tv':2A,20 'unknown':6B,7B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525556.5458684  (2021-05-09 03:59:16)
                             'size'  835584