Possible Clues:

• Do you get the point of what's in the beer that's high
• To do with great European mountains
• A large tree from the mountains
• Highland beer without cask
• Like some firs
• Power to cross a range of mountains
• The point of this is that it's in the ale that's high
• Strauss symphony making a row — piano is drowned
• The height of a tree is about fifty
• After half a century you get a high altitude tree