======================== unified (from filesystem) ========================
                                         'bitrate'  '72.771'
                                        'duration'  '323'
                                          'artist'  'Asylum Street Spankers'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sugar in my Bowl'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'Q-SYN-1', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-1']")
                                      'lastfmtags'  "['folk', 'blues', 'acoustic', 'alt-country', 'austin']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-alt'
                                             'bpm'  '123.6'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '123.6'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-alt'
'TIT2' (Title/songname/content description)         'Sugar in my Bowl'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Asylum Street Spankers'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['folk', 'blues', 'acoustic', 'alt-country', 'austin']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.73 dB'
'TXXX:replaygain_track_peak'                        '0.778297'

========================== row from database ==========================
                                              'id'  1505009
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Asylum Street Spankers - _Sugar in My Bowl_-Zr3NiNMk8OA.mp3
                                         'working'  None
                                         'bitrate'  72
                                    'duration_sec'  323
                                           'genre'  loc-namerica-country-alt
                                        'filesize'  2941901
                                           'mtime'  1639508117
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country _Sugar My Bowl_ Zr3NiNMk8OA loc namerica country alt
                                      'tag_artist'  Asylum Street Spankers
                                     'tag_release'  None
                                       'tag_title'  Sugar in my Bowl
                                             'bpm'  123.6
                                    'search_title'  'bowl':4 'in':2 'my':3 'sugar':1
                                   'search_artist'  'asylum':1 'spankers':3 'street':2
                                  'search_release'  
                                     'search_rest'  'alt':11 'bowl':7 'country':4 'exotica':2 'jazz':1 'loc':9 'my':6 'namerica':10 'nmk8oa':13 'oldies':3 'sugar':5 'zr3ni':12 'zr3ninmk8oa':8
                                    'search_combo'  'alt':18 'asylum':5B 'bowl':4A,14 'country':11 'exotica':9 'in':2A 'jazz':8 'loc':16 'my':3A,13 'namerica':17 'nmk8oa':20 'oldies':10 'spankers':7B 'street':6B 'sugar':1A,12 'zr3ni':19 'zr3ninmk8oa':15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-UNU-2', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-1', 'q-piano-1', 'Q-SYN-1', 'q-other-3', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['folk', 'blues', 'acoustic', 'alt-country', 'austin']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1639508117.3572247  (2021-12-14 19:55:17)
                             'size'  2941901