Sepulcros de Miel (English: Graves of Honey) is the twenty-first release by Omar Rodriguez-Lopez, guitarist of The Mars Volta Group. Released under the Omar Rodriguez-Lopez Quartet name, this record features fellow Mars Volta members John Frusciante, Juan Alderete & Marcel Rodriguez-Lopez. The record will be digitally released June 1, 2010, with a vinyl release to follow later in the month. This record is a free download with the option to donate money. All money raised will go to "Keep Music In Schools".