Country Star Signup Enter your information here to sign up for the Thunder 100.3 Country and Pilot House Marina Country Star contest. Artist Name Invalid Input Brief Description Invalid Input Contact Email Invalid Input Music Sample (.mp3, .wav, .wma file format) Invalid Input Do you have a video on the internet we can link to? Give us the URL here. Invalid Input If you are uploading an audio file it will take time to upload the file, depending on it's size. When the thank you message is displayed your upload is complete.