======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '227'
                                          'artist'  'Decoder'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Epox'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['post hardcore', 'techstep', 'experimental', 'drum and bass', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '11'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '118.014'
                                             'key'  '1A'
                                        'acoustid'  '8b89b019-4f02-4df2-b044-e9fbf0ae0472'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '118.014'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['DJ-mix', 'Decoder']])
'TIT2' (Title/songname/content description)         'Epox'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Cause 4 Concern'
'TPE2' (Band/orchestra/accompaniment)               'Decoder'
'TPOS' (Part of a set)                              '1/3'
'TPUB' (Publisher)                                  'React'
'TRCK' (Track number/Position in set)               '3/11'
'TSO2'                                              'Decoder'
'TSOP' (Performer sort order)                       'Cause 4 Concern'
'TXXX:ASIN'                                         'B00004TRG4'
'TXXX:Acoustid Id'                                  '8b89b019-4f02-4df2-b044-e9fbf0ae0472'
'TXXX:Artists'                                      'Cause 4 Concern'
'TXXX:BARCODE'                                      '5021620921501'
'TXXX:CATALOGNUMBER'                                'REACT CD 185'
'TXXX:Mp3gain_minmax'                               '140,188'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['post hardcore', 'techstep', 'experimental', 'drum and bass', 'ambient']
'TXXX:originalyear'                                 '2000'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.67 dB'
'TXXX:replaygain_track_peak'                        '0.534721'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a749c785-6281-4fbc-8391-f1908cab239f')

========================== row from database ==========================
                                              'id'  1406533
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/drumandbass/Cause4Concern - Epox.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  227
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5507579
                                           'mtime'  1621697677
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat drumandbass Cause4Concern electronic generic or radio dance
                                      'tag_artist'  Decoder
                                     'tag_release'  None
                                       'tag_title'  Epox
                                             'bpm'  118.014
                                    'search_title'  'epox':1
                                   'search_artist'  'decoder':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'cause4concern':6 'dance':3 'drumandbass':5 'electronic':7 'generic':2 'or':8 'radio':9 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':3 'cause4concern':8 'dance':5 'decoder':2B 'drumandbass':7 'electronic':9 'epox':1A 'generic':4 'or':10 'radio':11 'trapbeat':6
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['post hardcore', 'techstep', 'experimental', 'drum and bass', 'ambient']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621697676.9494805  (2021-05-22 17:34:36)
                             'size'  5507579