19 across: Hungarian scorer’s tip for audience? (5)
And another hat-tip to Michael Fuller for explaining this one as well, which is exceptionally well-deserved considered this just isn’t a very tidy clue. What we’ve got here is: tip = list (a nautical term I had no idea about), which gives tip for audience (for audience is the aural indicator) = Liszt = Hungarian scorer’s.
What I just can’t abide is Hungarian scorer’s = Liszt. The unaccounted for possessive just makes the whole thing messy.