As previously announced, Gov’t Mule will celebrate Halloween weekend with a Saturday, October 29 show at The Palace Theatre in Albany, NY, and now, the group has revealed a hint as to what this year’s Mule-O-Ween theme will be.

On their Instagram, Gov’t Mule posted the above image, which features a traffic light featuring both the logos of Traffic and Mule within similar artwork to the album cover of Traffic’s 1971 record, The Low Spark of High Heeled Boys, leading to speculation that Mule will be serving up a Traffic-themed Halloween show this year.

Past Halloween shows have featured Mule playing various themed sets and taking on the catalogs of several bands like Led Zeppelin, Pink Floyd, The Rolling Stones and The Who.