======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '484'
                                          'artist'  'Dixieland'
                                     'text_people'  ''
                                         'release'  'Preservation Hall Jazz Band'
                                           'title'  'Preservation Hall Jazz Band - Original Dixieland Onestep'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-4', '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'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-dixiestyle'
                                             'bpm'  '119.195'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Preservation Hall Jazz Band'
'TBPM' (BPM (beats per minute))                     '119.195'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-dixiestyle'
'TIT2' (Title/songname/content description)         'Preservation Hall Jazz Band - Original Dixieland Onestep'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dixieland'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'folk, world, & country']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.405108'

========================== row from database ==========================
                                              'id'  674913
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Dixieland/Dixieland - Preservation Hall Jazz Band - Original Dixieland Onestep.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  484
                                           'genre'  prerock-jb-jazz-o-dixiestyle
                                        'filesize'  7759473
                                           'mtime'  1620528478
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country prerock jb jazz dixiestyle
                                      'tag_artist'  Dixieland
                                     'tag_release'  Preservation Hall Jazz Band
                                       'tag_title'  Preservation Hall Jazz Band - Original Dixieland Onestep
                                             'bpm'  119.195
                                    'search_title'  'band':4 'dixieland':6 'hall':2 'jazz':3 'onestep':7 'original':5 'preservation':1
                                   'search_artist'  'dixieland':1
                                  'search_release'  'band':4 'hall':2 'jazz':3 'preservation':1
                                     'search_rest'  'country':4 'dixiestyle':7 'exotica':2 'jazz':1 'jb':6 'oldies':3 'prerock':5
                                    'search_combo'  'band':4A,12C 'country':16 'dixieland':6A,8B 'dixiestyle':19 'exotica':14 'hall':2A,10C 'jazz':3A,11C,13 'jb':18 'oldies':15 'onestep':7A 'original':5A 'prerock':17 'preservation':1A,9C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  ['jazz', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620528477.6891532  (2021-05-09 04:47:57)
                             'size'  7759473