======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '237'
                                          'artist'  'Eugene Jaudas National Promenade Band'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  "There's A Girl In The Heart Of Maryland Medley"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', '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-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1914'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '114.803'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '114.803'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1914'
'TIT2' (Title/songname/content description)         "There's A Girl In The Heart Of Maryland Medley"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eugene Jaudas National Promenade Band'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.71 dB'
'TXXX:replaygain_track_peak'                        '0.549215'

========================== row from database ==========================
                                              'id'  1518141
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1914/Eugene Jaudas National Promenade Band - There_s A Girl In The Heart Of Maryland Medley 1914.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  237
                                           'genre'  prerock-band
                                        'filesize'  4758987
                                           'mtime'  1620559513
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1914 There_s 1914 prerock band
                                      'tag_artist'  Eugene Jaudas National Promenade Band
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  There's A Girl In The Heart Of Maryland Medley
                                             'bpm'  114.803
                                    'search_title'  'a':4 'girl':5 'heart':8 'in':6 'maryland':10 'medley':11 'of':9 's':2 'the':7 'there':1 'theres':3
                                   'search_artist'  'band':5 'eugene':1 'jaudas':2 'national':3 'promenade':4
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1914':6 'band':10 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 's':8 'there':7
                                    'search_combo'  '00oldiepop':26 '1914':27 'a':4A 'album':18C 'band':16B,31 'country':25 'eugene':12B 'exotica':23 'girl':5A 'heart':8A 'in':6A 'jaudas':13B 'jazz':22 'maryland':10A 'medley':11A 'national':14B 'non':17C 'nonalbum':19C 'of':9A 'oldies':24 'prerock':30 'promenade':15B 's':2A,29 'the':7A 'there':1A,28 'theres':3A 'tracks':20C,21C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           '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-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1914
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559513.0134833  (2021-05-09 13:25:13)
                             'size'  4758987