======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '286'
                                          'artist'  'Herd'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-2', 'Q-PLAY-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-2', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['experimental', 'ambient', 'noise', 'thrash metal', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '138.7'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '138.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '2005'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Herd'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '19'
'TXXX:ALBUM'                                        'Hammond Heroes: 60s R&B Organ Grooves'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:TITLE'                                        'Impressions Of Oliver'
'TXXX:lastfmtags'                                   ['experimental', 'ambient', 'noise', 'thrash metal', '60s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.45 dB'
'TXXX:replaygain_track_peak'                        '0.426428'

========================== row from database ==========================
                                              'id'  1390413
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Spencer Davis Group Mk. II - VA - Hammond Heroes - 60s R&B Organ Grooves/19 - Impressions Of Oliver.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  286
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  9160580
                                           'mtime'  1620535451
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Spencer Davis Group Mk. II VA Hammond Heroes 60s R&B Organ Grooves 19 Impressions Of Oliver prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Herd
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  138.7
                                    'search_title'  None
                                   'search_artist'  'herd':1
                                  'search_release'  
                                     'search_rest'  '19':20 '60s':14 'b':16 'bossa':28 'country':4 'davis':6 'exotica':2 'grooves':19 'group':7 'hammond':12 'heroes':13 'ii':10 'impressions':21 'jazz':1 'jb':25 'lounge':26 'mk':8,9 'of':22 'oldies':3 'oliver':23 'or':27 'organ':18 'prerock':24 'r':15 'rb':17 'spencer':5 'va':11
                                    'search_combo'  '19':21 '60s':15 'b':17 'bossa':29 'country':5 'davis':7 'exotica':3 'grooves':20 'group':8 'hammond':13 'herd':1B 'heroes':14 'ii':11 'impressions':22 'jazz':2 'jb':26 'lounge':27 'mk':9,10 'of':23 'oldies':4 'oliver':24 'or':28 'organ':19 'prerock':25 'r':16 'rb':18 'spencer':6 'va':12
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['experimental', 'ambient', 'noise', 'thrash metal', '60s']
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620535450.7698812  (2021-05-09 06:44:10)
                             'size'  9160580