Aaron Kleinstub (born August 20, 1989), better known by his stage name Aalias, is an American music producer and musician from Cleveland, Ohio.

Aaron "Aalias" Kleinstub is a songwriter, composer, producer and multi-instrumentalist.^[2] As a teenager, he won numerous awards playing jazz trumpet, including the Yamaha Young Performing Artist Award, honorable mention from the National Association for the Advancement of the Arts, a Berklee Music Camp scholarship and a selection to perform in the Grammy Jazz Band at 16.^[3] After graduating from Kenston High School in Chagrin Falls, Ohio, Aalias moved to New York to study at Juilliard.^[2] He later transferred to Berklee College of Music, where he graduated with a focus in music production.^[2]

Aalias is perhaps best known for co-writing and co-producing the #1 hit song "The Monster" by Eminem featuring Rihanna.^[2] "The Monster" reached #1 on eight separate Billboard charts, including four weeks at #1 on the Hot 100^[4] and thirteen weeks at #1 on the Hot R&B/Hip-Hop Songs chart.^[5] It also topped the charts in twelve countries including Australia, Canada, France, Ireland, New Zealand, Switzerland, and the United Kingdom and won a Grammy for Best/Rap Sung Collaboration.^[6]

In 2017, Kleinstub teamed with friend and fellow writer-producer Corey "Latif" Williams to form duo Lo Boii. The band is signed to London-based label AWAL. Its first single "Floor Seats" dropped in April 2019.

This list is incomplete; you can help by adding missing items. (July 2015)