Complex sentence: In recent years, Mark has toured with international artists such as the Mexican, actress/singer, Ximena Sariñana as well as the Omar Rodriguez-Lopez Group and has recorded additional piano parts with The Mars Volta for their 2009 release "Octahedron".
Split into simpler sentences: In recent years, Mark has toured with international artists such as the Mexican, singer-songwriter and actress, Ximena Sariñana, and the Omar Rodriguez-Lopez Group. In addition to his touring efforts, Mark has also recorded additional piano parts with The Mars Volta for their 2009 release "Octahedron".