======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '150'
                                          'artist'  'Joe Maphis'
                                     'text_people'  'Mark Lindsay'
                                         'release'  'Flying Fingers (50s Columbia & Republic recs; Bear Family, 1996)'
                                           'title'  'Water Baby Boogie'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'country', 'all', 'bluegrass', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '23'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country-bluegrass'
                                             'bpm'  '93.673'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000325 0000027C 0000119E 00000FA3 00015FA7 00015FA7 000039D5 0000478B '
 '00015FBE 00015FBE')
'TALB' (Album/Movie/Show title)                     'Flying Fingers (50s Columbia & Republic recs; Bear Family, 1996)'
'TBPM' (BPM (beats per minute))                     '93.673'
'TCOM' (Composer)                                   'Mark Lindsay'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country-bluegrass'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'Water Baby Boogie'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Joe Maphis'
'TPE2' (Band/orchestra/accompaniment)               'Joe Maphis'
'TPUB' (Publisher)                                  'Bear Family'
'TRCK' (Track number/Position in set)               '23'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['instrumental', 'country', 'all', 'bluegrass', 'folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.636913'

========================== row from database ==========================
                                              'id'  761261
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Flying Fingers (50s Columbia & Republic recs; Bear Family, 1996)/23 Water Baby Boogie.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  150
                                           'genre'  loc-namerica-country-bluegrass
                                        'filesize'  6033426
                                           'mtime'  1621627943
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 23 loc namerica country bluegrass
                                      'tag_artist'  Joe Maphis
                                     'tag_release'  Flying Fingers (50s Columbia & Republic recs; Bear Family, 1996)
                                       'tag_title'  Water Baby Boogie
                                             'bpm'  93.673
                                    'search_title'  'baby':2 'boogie':3 'water':1
                                   'search_artist'  'joe':1 'maphis':2
                                  'search_release'  '1996':12,13 '50s':3,4 'bear':9 'columbia':5 'family':10,11 'fingers':2 'flying':1 'recs':7,8 'republic':6
                                     'search_rest'  '23':5 'bluegrass':8 'country':4 'exotica':2 'jazz':1 'loc':6 'namerica':7 'oldies':3
                                    'search_combo'  '1996':17C,18C '23':23 '50s':8C,9C 'baby':2A 'bear':14C 'bluegrass':26 'boogie':3A 'columbia':10C 'country':22 'exotica':20 'family':15C,16C 'fingers':7C 'flying':6C 'jazz':19 'joe':4B 'loc':24 'maphis':5B 'namerica':25 'oldies':21 'recs':12C,13C 'republic':11C 'water':1A
                                    'tag_tracknum'  23
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'country', 'all', 'bluegrass', 'folk']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627942.7807589  (2021-05-21 22:12:22)
                             'size'  6033426