======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '150'
                                          'artist'  'Dean Elliott & His Big Band'
                                     'text_people'  ''
                                         'release'  'Ultra-Lounge, Vol. 3: Space Capades'
                                           'title'  'The Lonesome Road'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['exotica', 'jazz', 'lounge', 'easy listening', 'illstreet']"
                                     'discogstags'  "['jazz', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  ''
                                            'date'  '1962'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '120.8'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Ultra-Lounge, Vol. 3: Space Capades'
'TBPM' (BPM (beats per minute))                     '120.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '1962'
'TIT2' (Title/songname/content description)         'The Lonesome Road'
'TKEY' (Initial key)                                '6B'
'TLEN' (Length)                                     '150543'
'TPE1' (Lead performer(s)/Soloist(s))               'Dean Elliott & His Big Band'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '18'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'easy listening']
'TXXX:lastfmtags'                                   ['exotica', 'jazz', 'lounge', 'easy listening', 'illstreet']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.55 dB'
'TXXX:replaygain_track_peak'                        '0.575660'

========================== row from database ==========================
                                              'id'  745998
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/va - space age pop & mid century domestics (jingles & themes)/(1962) dean elliott & his big band - the lonesome road.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  150
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3623288
                                           'mtime'  1620539435
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm va space age pop mid century domestics (jingles themes) (1962) dean elliott his big band the lonesome road prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Dean Elliott & His Big Band
                                     'tag_release'  Ultra-Lounge, Vol. 3: Space Capades
                                       'tag_title'  The Lonesome Road
                                             'bpm'  120.8
                                    'search_title'  'lonesome':2 'road':3 'the':1
                                   'search_artist'  'band':5 'big':4 'dean':1 'elliott':2 'his':3
                                  'search_release'  '3':6,7 'capades':9 'lounge':2 'space':8 'ultra':1 'ultralounge':3 'vol':4,5
                                     'search_rest'  '1962':12,13 'age':3 'band':18 'big':17 'bossa':28 'century':6 'dean':14 'domestics':7 'elliott':15 'exotica':27 'his':16 'jazz':24 'jb':23 'jingles':8,9 'lonesome':20 'lounge':25 'mid':5 'or':26 'pop':4 'prerock':22 'road':21 'space':2 'the':19 'themes':10,11 'va':1
                                    'search_combo'  '1962':29,30 '3':14C,15C 'age':20 'band':8B,35 'big':7B,34 'bossa':45 'capades':17C 'century':23 'dean':4B,31 'domestics':24 'elliott':5B,32 'exotica':44 'his':6B,33 'jazz':41 'jb':40 'jingles':25,26 'lonesome':2A,37 'lounge':10C,42 'mid':22 'or':43 'pop':21 'prerock':39 'road':3A,38 'space':16C,19 'the':1A,36 'themes':27,28 'ultra':9C 'ultralounge':11C 'va':18 'vol':12C,13C
                                    'tag_tracknum'  18
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['exotica', 'jazz', 'lounge', 'easy listening', 'illstreet']
                                        'tag_date'  1962
                                     'discogstags'  ['jazz', 'easy listening']

============================== file details ==============================
                                           'mtime'  1620539434.8651707  (2021-05-09 07:50:34)
                             'size'  3623288