======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '412'
                                          'artist'  'Janis Joplin'
                                     'text_people'  ''
                                         'release'  'Pearl'
                                           'title'  'Try (Just a Little Bit Harder) (live)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'rock', 'female vocalists', '60s', 'classic rock']"
                                     'discogstags'  "['rock', 'blues', 'blues rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '139.466'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Pearl'
'TBPM' (BPM (beats per minute))                     '139.466'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1971'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Try (Just a Little Bit Harder) (live)'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Janis Joplin'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'blues', 'blues rock']
'TXXX:lastfmtags'                                   ['blues', 'rock', 'female vocalists', '60s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.13 dB'
'TXXX:replaygain_track_peak'                        '0.611563'

========================== row from database ==========================
                                              'id'  669985
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Janis Joplin/MBZ;#Janis Joplin;#Pearl;#13;#Try (Just a Little Bit Harder) (live).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  412
                                           'genre'  rock-cppex-classic
                                        'filesize'  9906471
                                           'mtime'  1635956528
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country MBZ;#Janis Joplin;#Pearl;#13;#Try rock cppex classic
                                      'tag_artist'  Janis Joplin
                                     'tag_release'  Pearl
                                       'tag_title'  Try (Just a Little Bit Harder) (live)
                                             'bpm'  139.466
                                    'search_title'  'a':4 'bit':6 'harder':7,8 'just':2,3 'little':5 'live':9,10 'try':1
                                   'search_artist'  'janis':1 'joplin':2
                                  'search_release'  'pearl':1
                                     'search_rest'  '13':11,15 'classic':19 'country':4 'cppex':18 'exotica':2 'janis':6,8 'jazz':1 'joplin':9,13 'mbz':5,7 'oldies':3 'pearl':10,14 'rock':17 'try':12,16
                                    'search_combo'  '13':24,28 'a':4A 'bit':6A 'classic':32 'country':17 'cppex':31 'exotica':15 'harder':7A,8A 'janis':11B,19,21 'jazz':14 'joplin':12B,22,26 'just':2A,3A 'little':5A 'live':9A,10A 'mbz':18,20 'oldies':16 'pearl':13C,23,27 'rock':30 'try':1A,25,29
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'rock', 'female vocalists', '60s', 'classic rock']
                                        'tag_date'  1971
                                     'discogstags'  ['rock', 'blues', 'blues rock']

============================== file details ==============================
                                           'mtime'  1635956527.780354  (2021-11-03 17:22:07)
                             'size'  9906471