======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '183'
                                          'artist'  "Yerkes' Jazarimba Orchestra"
                                     'text_people'  ''
                                         'release'  'Columbia A 2840'
                                           'title'  'I Might Be Your Once In A While'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1919'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '97.365'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Columbia A 2840'
'TBPM' (BPM (beats per minute))                     '97.365'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1919'
'TIT2' (Title/songname/content description)         'I Might Be Your Once In A While'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               "Yerkes' Jazarimba Orchestra"
'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'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.38 dB'
'TXXX:replaygain_track_peak'                        '0.723158'

========================== row from database ==========================
                                              'id'  1520893
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1919/Yerkes_ Jazzarimba Orchestra - I Might Be Your Once In A While -9-1919.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  183
                                           'genre'  prerock-band
                                        'filesize'  3671730
                                           'mtime'  1620559657
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1919 Yerkes_ Jazzarimba 9 1919 prerock band
                                      'tag_artist'  Yerkes' Jazarimba Orchestra
                                     'tag_release'  Columbia A 2840
                                       'tag_title'  I Might Be Your Once In A While
                                             'bpm'  97.365
                                    'search_title'  'a':7 'be':3 'i':1 'in':6 'might':2 'once':5 'while':8 'your':4
                                   'search_artist'  'jazarimba':3 'orchestra':4 'yerkes':1,2
                                  'search_release'  '2840':3 'a':2 'columbia':1
                                     'search_rest'  '00oldiepop':5 '1919':6 '9':9 'band':11 'country':4 'exotica':2 'jazz':1 'jazzarimba':8 'oldies':3 'prerock':10 'yerkes':7
                                    'search_combo'  '00oldiepop':20 '1919':21 '2840':15C '9':24 'a':7A,14C 'band':26 'be':3A 'columbia':13C 'country':19 'exotica':17 'i':1A 'in':6A 'jazarimba':11B 'jazz':16 'jazzarimba':23 'might':2A 'oldies':18 'once':5A 'orchestra':12B 'prerock':25 'while':8A 'yerkes':9B,10B,22 'your':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1919
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559657.4852116  (2021-05-09 13:27:37)
                             'size'  3671730