======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '173'
                                          'artist'  'Richard Tauber'
                                     'text_people'  ''
                                         'release'  'Only a Rose'
                                           'title'  'One Day When We Were Young'
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                                      'lastfmtags'  "['austrian', 'myhits', 'myhitparade', 'classical', 'tenor']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
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                                     'tracknumber'  '5'
                                      'tracktotal'  '25'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '133.756'
                                             'key'  '3B'
                                        'acoustid'  'f9f0e76e-6640-47fc-8b5a-64c363f392ab'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '133.756'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDOR' (Original release time)                      '1995'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'One Day When We Were Young'
'TKEY' (Initial key)                                '3B'
'TLEN' (Length)                                     '173733'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Richard Tauber'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Music & Memories'
'TRCK' (Track number/Position in set)               '5/25'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Tauber, Richard'
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'TXXX:MusicBrainz Album Status'                     'official'
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========================== row from database ==========================
                                              'id'  1522558
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/richard tauber - one day when we were young.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  173
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2797568
                                           'mtime'  1620527927
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                                        'rest_str'   00blues jazz exotica oldies country 30_s collection richard tauber one day when we were young prerock jb jazz unsorted
                                      'tag_artist'  Richard Tauber
                                     'tag_release'  Only a Rose
                                       'tag_title'  One Day When We Were Young
                                             'bpm'  133.756
                                    'search_title'  'day':2 'one':1 'we':4 'were':5 'when':3 'young':6
                                   'search_artist'  'richard':1 'tauber':2
                                  'search_release'  'a':2 'only':1 'rose':3
                                     'search_rest'  '30':5 'collection':7 'country':4 'day':11 'exotica':2 'jazz':1 'jb':17 'oldies':3 'one':10 'prerock':16 'richard':8 's':6 'tauber':9 'unsorted':18 'we':13 'were':14 'when':12 'young':15
                                    'search_combo'  '30':16 'a':10C 'collection':18 'country':15 'day':2A,22 'exotica':13 'jazz':12 'jb':28 'oldies':14 'one':1A,21 'only':9C 'prerock':27 'richard':7B,19 'rose':11C 's':17 'tauber':8B,20 'unsorted':29 'we':4A,24 'were':5A,25 'when':3A,23 'young':6A,26
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['austrian', 'myhits', 'myhitparade', 'classical', 'tenor']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527926.7193244  (2021-05-09 04:38:46)
                             'size'  2797568