There are multiple artists with this name:
1) Oval (Markus Popp) is an experimental electronic outfit from Germany, which formed in 1991.
In 1991, Oval was comprised of Markus Popp, Sebastian Oschatz, and Frank Metzger, although Oschatz and Metzger “left” the group in 1995. All three are regarded as pioneers of what has come to be termed ‘glitch’. Often mistaken as a genre of music that simply incorporates error into its aesthetic, many of those today viewed as working in this area do not consider their work to be ‘music’ at all. Disdaining the use of synthesizers, Oval instead devised their own systems for introducing chance into sound generation; most notably, Popp deliberately distressed CDs, often inscribing these with sharp objects and felt pens, and processing the palette of fragmented sounds to create rhythm. Such work has subsequently been deemed ‘musical’ by many listeners unfamiliar with decades of sound art and Musique Concrete.
Markus Popp continues to release albums under the name Oval. The most recent are the back to back albums Ovalprocess and Ovalcommers. Frank Metzger has released some singles with Mego and the internet label Falsch and has started a collaboration with Rossano Polidoro and Emiliano Romanelli from “tu’m” in 2003, which is called “Steno”, while Sebastian Oschatz is an interaction designer with Meso, a German media design collective.
In 2003, Popp released a record on Thrill Jockey together with the Japanese singer Eriko Toyada. As a duo they were called So, and their record was self-titled.
2) Oval is a rock band from NJ, USA. They recorded two EPs for Icerink records (run by Bob Stanley and Pete Wiggs of Saint Etienne)in 1992/93.