======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '211'
                                          'artist'  'Soul Survival'
                                     '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-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['funk / soul', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '98.9'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '98.9'
'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))               'Soul Survival'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '20'
'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-UNU'                                        '1'
'TXXX:TITLE'                                        'Soul Soup'
'TXXX:discogstags'                                  ['funk / soul', 'pop', 'rock']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.27 dB'
'TXXX:replaygain_track_peak'                        '0.431434'

========================== row from database ==========================
                                              'id'  1388738
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Spencer Davis Group Mk. II - VA - Hammond Heroes - 60s R&B Organ Grooves/20 - Soul Soup.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  211
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  6756224
                                           'mtime'  1620535456
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Spencer Davis Group Mk. II VA Hammond Heroes 60s R&B Organ Grooves 20 Soup prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Soul Survival
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  98.9
                                    'search_title'  None
                                   'search_artist'  'soul':1 'survival':2
                                  'search_release'  
                                     'search_rest'  '20':20 '60s':14 'b':16 'bossa':26 'country':4 'davis':6 'exotica':2 'grooves':19 'group':7 'hammond':12 'heroes':13 'ii':10 'jazz':1 'jb':23 'lounge':24 'mk':8,9 'oldies':3 'or':25 'organ':18 'prerock':22 'r':15 'rb':17 'soup':21 'spencer':5 'va':11
                                    'search_combo'  '20':22 '60s':16 'b':18 'bossa':28 'country':6 'davis':8 'exotica':4 'grooves':21 'group':9 'hammond':14 'heroes':15 'ii':12 'jazz':3 'jb':25 'lounge':26 'mk':10,11 'oldies':5 'or':27 'organ':20 'prerock':24 'r':17 'rb':19 'soul':1B 'soup':23 'spencer':7 'survival':2B 'va':13
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-piano-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2005
                                     'discogstags'  ['funk / soul', 'pop', 'rock']

============================== file details ==============================
                                           'mtime'  1620535455.6865697  (2021-05-09 06:44:15)
                             'size'  6756224