What did it sound like? I used to have cassette tape for calling hogs but they never responded. It sounded like a bunch of hogs fighting. I didn't try it at night though.
These are some of the sounds I use. They were recorded by Glenn Guess of Hog Zombies, over the course of several years and involving many more years research to know what sounds hogs or boars respond to.
They are an app for your phone, and you use Bluetooth to control the sounds on a speaker. I think I got the Hog Pro and Predator Pro apps and all the extra sounds for about $10..
How do you like the super Hogster? After research Bering Optics seems to produce the best product for the price point. I was going to go with a pulsar but seems Bering does a better job in the sub 4 k range.