Robert Aiki Aubrey Lowe is an American musician, composer and sound artist who records under the moniker Lichens.

In live performances as Lichens, Lowe incorporates spontaneous arrangements of voice and modular synthesizer patch pieces.

In 2008, Lichens toured extensively opening for instrumental post-rock band Explosions in the Sky and played at their curated All Tomorrow's Parties music festival.

Lowe performed in the noise rock supergroup Singer, playing bass and providing vocals on two albums for Drag City with Todd Rittman and Adam Vida of U.S.

He performed tambura and vocals for stoner/doom metal band Om on their albums God Is Good and Advaitic Songs, and also joined them on stage.