Last week we took the Lento box to capture the natural soundscapes of rural Leicestershire and Rutland. Our visit coincided with the warmest May temperatures on record and as it turned out the most powerful thunderstorms we'd ever experienced.

On the evening of 26 May huge storm clouds swept into the valley, centering exactly over a remote wooded area where we'd left the Lento box tied to a tree to capture the natural soundscape. An hour later the storm was still directly overhead with ear-splitting thunderclaps and fork lightning. We crossed our fingers that the mics would be alright. We collected the box the next morning. The mics survived but the box was drenched.

In this episode we're sharing the hour leading up to those lightning strikes. Listening is a rare opportunity to experience the sound-feel of being within an empty rural woodland as the trees and wildlife prepare to ride out the on-coming tumult.

Gain full aural immersion of this woodland soundscape with headphones or ear pods. The clarity and spatial reverberances of the spring birdsong. The 360 degree humming created by millions of tiny bees and other insects engaged in their daily foraging. Hear how a small deer picks its way over the leaf litter and pauses right beneath the tree holding the mics. Was it curious about the Lento box? Its footfalls seem to suggest it was. Pheasants can also be heard wandering the forest floor nearby, and mewing to each other in ways we haven't heard before. Baa’ings of sheep and lambs from the surrounding fields echo in the spaces between the trees. As this passage of time progresses towards the 50 minute mark the sky above the woodland has gone from a bright spring blue to the densest of heavy clouded grey. The landscape has dimmed into a premature dusk, punctuated only by intense electrical flashes. It can feel so dangerous to us even from within sturdy buildings, and yet thunderstorms and the way the wildlife respond to them with only leaves and branches for protection are all just part and parcel of life on Earth.

* In the last few minutes of this 62 minute passage of time some owls can be heard hooting shortly after the first major roll of thunder cracks open the rapidly darkening sky.

** This is Launde Park Wood Nature Reserve, an ancient woodland of 57 Hectares, managed by Leicester and Rutland Wildlife Trust.

*** Next time we'll share the next hour, but be prepared, it's one of the most tumultuous hours we've ever recorded!