======================== unified (from filesystem) ========================
                                         'bitrate'  '196.338'
                                        'duration'  '299'
                                          'artist'  'Bruce Haack'
                                     'text_people'  ''
                                         'release'  'Farad: The Electric Voice 2LP'
                                           'title'  'Snow Job'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'space age pop', 'electronic', 'psychedelic', 'experimental']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '108.6'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Farad: The Electric Voice 2LP'
'TBPM' (BPM (beats per minute))                     '108.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '2010'
'TENC' (Encoded by)                                 'Lame 3.97'
'TIT2' (Title/songname/content description)         'Snow Job'
'TKEY' (Initial key)                                '6A'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Bruce Haack'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'space age pop', 'electronic', 'psychedelic', 'experimental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.37 dB'
'TXXX:replaygain_track_peak'                        '0.426834'

========================== row from database ==========================
                                              'id'  918745
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Bruce Haack/2010 - Bruce Haack - Farad： The Electric Voice (Stones Throw) 2LP [vBr]/13-bruce_haack-snow_job.mp3
                                         'working'  None
                                         'bitrate'  196
                                    'duration_sec'  299
                                           'genre'  electronic-experimental
                                        'filesize'  7356696
                                           'mtime'  1622801505
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 2010 Farad： (Stones Throw) [vBr] 13 bruce_haack snow_job electronic experimental
                                      'tag_artist'  Bruce Haack
                                     'tag_release'  Farad: The Electric Voice 2LP
                                       'tag_title'  Snow Job
                                             'bpm'  108.6
                                    'search_title'  'job':2 'snow':1
                                   'search_artist'  'bruce':1 'haack':2
                                  'search_release'  '2lp':6 'electric':4 'farad':1,2 'the':3 'voice':5
                                     'search_rest'  '2010':1 'br':19,20 'bruce':11 'electronic':15 'experimental':16 'farad':2,3,4 'haack':12 'job':14 'snow':13 'stones':5,6 'throw':7,8 'v':17,18 'vbr':9,10
                                    'search_combo'  '2010':11 '2lp':10C 'br':29,30 'bruce':3B,21 'electric':8C 'electronic':25 'experimental':26 'farad':5C,6C,12,13,14 'haack':4B,22 'job':2A,24 'snow':1A,23 'stones':15,16 'the':7C 'throw':17,18 'v':27,28 'vbr':19,20 'voice':9C
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'space age pop', 'electronic', 'psychedelic', 'experimental']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1622801505.1459606  (2021-06-04 12:11:45)
                             'size'  7356696