======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '162'
                                          'artist'  'The New Lost City Ramblers'
                                     'text_people'  ''
                                         'release'  'Friends of Old Time Music: The Folk Arrival, 1961-1965'
                                           'title'  'Jordan Is a Hard Road to Travel'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
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 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
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                                      'lastfmtags'  "['all', 'country', 'bluegrass', 'folk', 'trains and hobos', 'old timey']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '19'
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'loc-namerica'
                                             'bpm'  '123'
                                             'key'  '3B'
                                        'acoustid'  'd22213b0-6836-4ca8-9daa-9c2e7d7a3b24'
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))                     '123'
'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)         'Jordan Is a Hard Road to Travel'
'TKEY' (Initial key)                                '3B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The New Lost City Ramblers'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/3'
'TPUB' (Publisher)                                  'Smithsonian Folkways'
'TRCK' (Track number/Position in set)               '6/19'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'New Lost City Ramblers, The'
'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:Acoustid Id'                                  'd22213b0-6836-4ca8-9daa-9c2e7d7a3b24'
'TXXX:Artists'                                      'The New Lost City Ramblers'
'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'                        '56e619c0-064f-4ba6-9ce3-c5431d29cadf'
'TXXX:MusicBrainz Release Group Id'                 '44a7e1d4-439c-3da6-b676-27e319349a0c'
'TXXX:MusicBrainz Release Track Id'                 '2f7909f0-f38e-3073-a579-c5a929e4f07d'
'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:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['all', 'country', 'bluegrass', 'folk', 'trains and hobos', 'old timey']
'TXXX:mood'                                         'Relaxed/Not aggressive/Not party/Not electronic/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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.68 dB'
'TXXX:replaygain_track_peak'                        '0.398333'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'faf84142-39ef-43f1-9b89-300a2047a1d2')

========================== row from database ==========================
                                              'id'  1476809
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Friends of Old Time Music - Cd 2/06 - The New Lost City Ramblers - Jordan Is A Hard Road To Travel.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  162
                                           'genre'  loc-namerica
                                        'filesize'  6557755
                                           'mtime'  1621627949
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Cd 2 06 To loc namerica
                                      'tag_artist'  The New Lost City Ramblers
                                     'tag_release'  Friends of Old Time Music: The Folk Arrival, 1961-1965
                                       'tag_title'  Jordan Is a Hard Road to Travel
                                             'bpm'  123.0
                                    'search_title'  'a':3 'hard':4 'is':2 'jordan':1 'road':5 'to':6 'travel':7
                                   'search_artist'  'city':4 'lost':3 'new':2 'ramblers':5 'the':1
                                  '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 'cd':5 'country':4 'exotica':2 'jazz':1 'loc':8 'namerica':9 'oldies':3 'to':7
                                    'search_combo'  '1961':23C '19611965':25C '1965':24C '2':31 'a':3A 'arrival':21C,22C 'cd':30 'city':11B 'country':29 'exotica':27 'folk':20C 'friends':13C 'hard':4A 'is':2A 'jazz':26 'jordan':1A 'loc':33 'lost':10B 'music':17C,18C 'namerica':34 'new':9B 'of':14C 'old':15C 'oldies':28 'ramblers':12B 'road':5A 'the':8B,19C 'time':16C 'to':6A,32 'travel':7A
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['all', 'country', 'bluegrass', 'folk', 'trains and hobos', 'old timey']
                                        'tag_date'  1965
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621627949.425615  (2021-05-21 22:12:29)
                             'size'  6557755