======================== unified (from filesystem) ========================
                                         'bitrate'  '147.353'
                                        'duration'  '146'
                                          'artist'  'Jimmy Wakely & Margaret Whiting'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Lets go to Church'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['christmas', 'light', 'pwsm - colour', 'light programme']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '84.210'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.210'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         'Lets go to Church'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jimmy Wakely & Margaret Whiting'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['christmas', 'light', 'pwsm - colour', 'light programme']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+0.23 dB'
'TXXX:replaygain_track_peak'                        '0.589347'

========================== row from database ==========================
                                              'id'  966525
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Margaret Whiting, Jimmy Wakely - Lets go to Church.wma.mp3
                                         'working'  None
                                         'bitrate'  147
                                    'duration_sec'  146
                                           'genre'  loc-namerica-country
                                        'filesize'  2703370
                                           'mtime'  1621628239
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Old Country Music Whiting, Church.wma loc namerica country
                                      'tag_artist'  Jimmy Wakely & Margaret Whiting
                                     'tag_release'  None
                                       'tag_title'  Lets go to Church
                                             'bpm'  84.21
                                    'search_title'  'church':4 'go':2 'lets':1 'to':3
                                   'search_artist'  'jimmy':1 'margaret':3 'wakely':2 'whiting':4
                                  'search_release'  
                                     'search_rest'  'church':9 'churchwma':11 'country':4 'exotica':2 'jazz':1 'loc':12 'music':6 'namerica':13 'old':5 'oldies':3 'whiting':7,8 'wma':10
                                    'search_combo'  'church':4A,17 'churchwma':19 'country':12 'exotica':10 'go':2A 'jazz':9 'jimmy':5B 'lets':1A 'loc':20 'margaret':7B 'music':14 'namerica':21 'old':13 'oldies':11 'to':3A 'wakely':6B 'whiting':8B,15,16 'wma':18
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['christmas', 'light', 'pwsm - colour', 'light programme']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628239.486438  (2021-05-21 22:17:19)
                             'size'  2703370