Which unique collaborations has Janis Elspas been involved in recently?

Based on the available content, I can share that Rebecca Elspas, presumably related to Janis Elspas, has been involved in some unique musical collaborations. She performed with the all-female a Capella group Mezumenet at the University of Maryland. They did a parody of "The Rabbi's Son" and a mashup of "Drag Me in Chains" with Dena Fishman.

However, I don't have specific information about Janis Elspas's recent collaborations. Could you provide more details or context about the type of collaborations you're interested in? For example, are you asking about musical, artistic, or business collaborations?