======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '828'
                                          'artist'  'Philadelphia Orchestra, Riccardo Mutti'
                                     'text_people'  ''
                                         'release'  'Brahms - Complete Symphonies'
                                           'title'  'Brahms - Tragic Overture, Op.81'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '145.580'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Brahms - Complete Symphonies'
'TBPM' (BPM (beats per minute))                     '145.580'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TIT2' (Title/songname/content description)         'Brahms - Tragic Overture, Op.81'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Philadelphia Orchestra, Riccardo Mutti'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'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'                        '+3.63 dB'
'TXXX:replaygain_track_peak'                        '0.927985'

========================== row from database ==========================
                                              'id'  1307620
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Johannes Brahms - cifs2a42.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  828
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  33133206
                                           'mtime'  1620562003
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] Johannes cifs2a42 prerock classical or classical instruments
                                      'tag_artist'  Philadelphia Orchestra, Riccardo Mutti
                                     'tag_release'  Brahms - Complete Symphonies
                                       'tag_title'  Brahms - Tragic Overture, Op.81
                                             'bpm'  145.58
                                    'search_title'  '81':6 'brahms':1 'op':5 'op81':7 'overture':3,4 'tragic':2
                                   'search_artist'  'mutti':5 'orchestra':2,3 'philadelphia':1 'riccardo':4
                                  'search_release'  'brahms':1 'complete':2 'symphonies':3
                                     'search_rest'  '00poprockelectronic':1 'cifs2a42':8 'classical':10 'files':5,6 'instruments':12 'johannes':7 'loose':3,4 'or':11 'prerock':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':16 '81':6A 'brahms':1A,13C 'cifs2a42':23 'classical':25 'complete':14C 'files':20,21 'instruments':27 'johannes':22 'loose':18,19 'mutti':12B 'op':5A 'op81':7A 'or':26 'orchestra':9B,10B 'overture':3A,4A 'philadelphia':8B 'prerock':24 'riccardo':11B 'symphonies':15C 'tragic':2A 'unsorted':17
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  8A
                                           '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-1', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562002.9872038  (2021-05-09 14:06:42)
                             'size'  33133206