======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '190'
                                          'artist'  'Julian Curwin'
                                     'text_people'  ''
                                         'release'  'plastictango new'
                                           'title'  'Carol [edited]'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['jazz', 'folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga;loc-unsorted'
                                             'bpm'  '104.931'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'plastictango new'
'TBPM' (BPM (beats per minute))                     '104.931'
'TCON' (Content type, a.k.a. Genre)                 ['loc-style-tango or milonga', 'loc-unsorted']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Carol [edited]'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Julian Curwin'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:MP3GAIN_MINMAX'                               '096,181'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['jazz', 'folk, world, & country']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.17 dB'
'TXXX:replaygain_track_peak'                        '1.012099'

========================== row from database ==========================
                                              'id'  246762
                                            'path'  /data/Music/Bulk/00localcharacter/plastictango/new/new!! 25.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  190
                                           'genre'  loc-style-tango or milonga;loc-unsorted
                                        'filesize'  4577887
                                           'mtime'  1620528441
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter new!! 25 loc style or milonga;loc unsorted
                                      'tag_artist'  Julian Curwin
                                     'tag_release'  plastictango new
                                       'tag_title'  Carol [edited]
                                             'bpm'  104.931
                                    'search_title'  'carol':1 'edited':2,3
                                   'search_artist'  'curwin':2 'julian':1
                                  'search_release'  'new':2 'plastictango':1
                                     'search_rest'  '25':2 'loc':3,7,9 'milonga':6,8 'new':1 'or':5 'style':4 'unsorted':10
                                    'search_combo'  '25':9 'carol':1A 'curwin':5B 'edited':2A,3A 'julian':4B 'loc':10,14,16 'milonga':13,15 'new':7C,8 'or':12 'plastictango':6C 'style':11 'unsorted':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  2005
                                     'discogstags'  ['jazz', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620528441.3343246  (2021-05-09 04:47:21)
                             'size'  4577887