Most of the Extra Special Terrestrial Guests are members of the celebrated American jazz band Sun Ra Arkestra. The Sun Ra musicians met Alash at the 2003 Uncool world music festival in Poschiavo, Switzerland, when the festival was dedicated to Arkestra director and jazz legend Marshall Allen. The musicians hit it off, and the Arkestra went to Tuva the following year for the Ustuu-Khuree Festival. The groups were reunited in 2006, when Alash toured the U.S. and played in the Arkestra's home city of Philadephia. In 2007 and 2008, Alash collaborated with various combinations of Arkestra members and other musicians, calling themselves the Deep Space Posse and Extra Special Terrestrial Guests.

Alash and the Extra Special Terrestrial Guests performed several joint concerts, producing some extraordinary jam sessions. Filmmaker Jason Fifield captured the 2007 performance at the Rotunda, and Brendan Krivda recorded the 2008 performance. Jason, Brendan, and the musicians have graciously given permission to post the recordings on our website.