I visited the Upper Texas Coast April 15-April 19.
First Stop was Brazoria National Wildlife Area in Brazoria County Texas.
Here is a 2 minute recording of Frogs, Toads and Insects heard at a marsh in the refuge.
There was quite a bit of wind and I used a leveler filter to try to mitigate some of the wind noise in the recording.
The Gulf Coast Toad sings near the end of the recording.
Full Recording
Gulf Coast Toad Segment