======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '97'
                                          'artist'  'Bill Monroe and His Bluegrass Boys'
                                     'text_people'  ''
                                         'release'  'Friends of Old Time Music: The Folk Arrival, 1961-1965'
                                           'title'  'Shady Grove'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['bluegrass', 'country', 'folk', 'americana', 'banjo']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '19'
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'loc-namerica'
                                             'bpm'  '153'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Friends of Old Time Music: The Folk Arrival, 1961-1965'
'TBPM' (BPM (beats per minute))                     '153'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica'
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '1965'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Peter K. Siegel']])
'TIT2' (Title/songname/content description)         'Shady Grove'
'TKEY' (Initial key)                                '1B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Monroe and His Bluegrass Boys'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/3'
'TPUB' (Publisher)                                  'Smithsonian Folkways'
'TRCK' (Track number/Position in set)               '9/19'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Monroe, Bill and the Bluegrass Boys'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.83.01, LAME dll 3.97, 320 Kbit/s, Stereo, High quality'
'TXXX:ASIN'                                         'B000H4W90S'
'TXXX:Artists'                                      'Bill Monroe and His Bluegrass Boys'
'TXXX:BARCODE'                                      '093074016022'
'TXXX:CATALOGNUMBER'                                'SFW CD 40160'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'cf2f8499-2ee5-4433-abde-3fc3a080ea9a'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '624db6ea-1afb-4a3c-8092-5acfd2cb4a33'
'TXXX:MusicBrainz Release Group Id'                 '44a7e1d4-439c-3da6-b676-27e319349a0c'
'TXXX:MusicBrainz Release Track Id'                 '9b67b7ba-4f58-376c-80a3-a94979f0844c'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['bluegrass', 'country', 'folk', 'americana', 'banjo']
'TXXX:mood'                                         'Not relaxed/Not aggressive/Not party/Not electronic/Not happy/Acoustic/Sad'
'TXXX:originalyear'                                 '2006'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.44 dB'
'TXXX:replaygain_track_peak'                        '0.475658'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'661a8539-6b55-46f7-a977-c3272cc342f6')

========================== row from database ==========================
                                              'id'  1476881
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Friends of Old Time Music - Cd 2/09 - Bill Monroe And His Blue Grass Boys - Shady Grove.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  97
                                           'genre'  loc-namerica
                                        'filesize'  3955359
                                           'mtime'  1621627949
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Cd 2 09 And Grass loc namerica
                                      'tag_artist'  Bill Monroe and His Bluegrass Boys
                                     'tag_release'  Friends of Old Time Music: The Folk Arrival, 1961-1965
                                       'tag_title'  Shady Grove
                                             'bpm'  153.0
                                    'search_title'  'grove':2 'shady':1
                                   'search_artist'  'and':3 'bill':1 'bluegrass':5 'boys':6 'his':4 'monroe':2
                                  'search_release'  '1961':11 '19611965':13 '1965':12 'arrival':9,10 'folk':8 'friends':1 'music':5,6 'of':2 'old':3 'the':7 'time':4
                                     'search_rest'  '2':6 'and':7 'cd':5 'country':4 'exotica':2 'grass':8 'jazz':1 'loc':9 'namerica':10 'oldies':3
                                    'search_combo'  '1961':19C '19611965':21C '1965':20C '2':27 'and':5B,28 'arrival':17C,18C 'bill':3B 'bluegrass':7B 'boys':8B 'cd':26 'country':25 'exotica':23 'folk':16C 'friends':9C 'grass':29 'grove':2A 'his':6B 'jazz':22 'loc':30 'monroe':4B 'music':13C,14C 'namerica':31 'of':10C 'old':11C 'oldies':24 'shady':1A 'the':15C 'time':12C
                                    'tag_tracknum'  9
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['bluegrass', 'country', 'folk', 'americana', 'banjo']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627949.475743  (2021-05-21 22:12:29)
                             'size'  3955359