yes – ran a test
and in your sample
you can also do a search on singer then add writer ?
or would that do a search that meant someone would already need have both tags?
hmmmm, might return an empty set that way

Tabbles called
Test1
Test2
with 4 unique files (2 files each)
if I searched 1 AND 2 = got an EMPTY set
If I made a new tabble called test
and added test1 and test2 nested
then – test showed all 4 files

= yes – as i am sure you know – but was clarifying for other users 😉