Hey Paul, earlier this year you mentioned missing frog sounds at the Lab in this thread Frog Habitat

A week ago I was looking at the Kickstarter for this noise generator that helps you sleep Snooz

Since it was out of my price range for now, I wondered if the Play Store would have an app that would make similar noises. App for Noise

Guess what one of the sounds are? Yep, frog sounds. Pretty cool.

Nice!

Of course, setting up some speakers and playing the sounds is not quite the organic approach.

Organic?
Like geese or duck calls to lure juicy great tasting birds to an early demise?
Maybe you could apply for a grant to study the effect of artificial sounds on the lure of frogs to a non-native habitat. Then another study on how artificial sounds soothe permie types.
My wife discovered that a vacuum's noise could calm a cholicky baby.