======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '153'
                                          'artist'  'Bill Doggett'
                                     'text_people'  ''
                                         'release'  'Out of the Cool Vol 4'
                                           'title'  'Hold it'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['bluegrass', 'jazz', 'rhythm and blues', 'blues', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '84.1'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:eng'                            'JUICE'
'TALB' (Album/Movie/Show title)                     'Out of the Cool Vol 4'
'TBPM' (BPM (beats per minute))                     '84.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Hold it'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bill Doggett'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['bluegrass', 'jazz', 'rhythm and blues', 'blues', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.90 dB'
'TXXX:replaygain_track_peak'                        '0.599680'

========================== row from database ==========================
                                              'id'  1388527
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Richie Valens - VV.AA. Out of the Cool. Vol. 04/13-bill_doggett_-_hold_it-jce.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  153
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3696523
                                           'mtime'  1620534135
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Richie Valens VV.AA. Cool. Vol. 04 13 bill_doggett_ _hold_it jce prerock jb jazz unsorted
                                      'tag_artist'  Bill Doggett
                                     'tag_release'  Out of the Cool Vol 4
                                       'tag_title'  Hold it
                                             'bpm'  84.1
                                    'search_title'  'hold':1 'it':2
                                   'search_artist'  'bill':1 'doggett':2
                                  'search_release'  '4':6 'cool':4 'of':2 'out':1 'the':3 'vol':5
                                     'search_rest'  'aa':8 'bill':14 'cool':10,11 'country':4 'doggett':15 'exotica':2 'hold':16 'it':17 'jazz':1 'jb':20 'jce':18 'oldies':3 'prerock':19 'richie':5 'unsorted':21 'valens':6 'vol':12,13 'vv':7 'vvaa':9
                                    'search_combo'  '4':10C 'aa':18 'bill':3B,24 'cool':8C,20,21 'country':14 'doggett':4B,25 'exotica':12 'hold':1A,26 'it':2A,27 'jazz':11 'jb':30 'jce':28 'of':6C 'oldies':13 'out':5C 'prerock':29 'richie':15 'the':7C 'unsorted':31 'valens':16 'vol':9C,22,23 'vv':17 'vvaa':19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['bluegrass', 'jazz', 'rhythm and blues', 'blues', 'funk']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620534134.762447  (2021-05-09 06:22:14)
                             'size'  3696523