We are Concrete! 

Based in New York City, Concrete was founded in 2015 by three friends. Performing anything from pop hits and classic rock to holiday carols, Concrete aims to bring three-part harmony and a fresh sound to everything they sing.

Melina | Soprano

Melina FINAL (website crop)

Melina, who hails from the NE corridor of I-95 (CT, MA, and VT,) is a classically trained coloratura soprano who learned that she had a knack for pop riffing in her college a cappella group, Diversions, at Mount Holyoke College. She’s also sung with the Stonewall Chorale, Empire A Cappella, performed at Carnegie Hall and BAM, and participated in various community theater productions including Puccini’s La Boheme and Rodgers and Hammerstein’s Cinderella (title role). She founded Concrete in 2015 with Caitlin and Gillian, and says it has been one of her best musical decisions to date!

Catherine | Mezzo

Catherine FINAL (website crop)

Catherine is a social worker, currently working as a family therapist in Manhattan. She loves working with kids! If there is a baby in the room, you will almost always find her singing to/with it. Catherine has grown up singing in choirs, theatre, and a cappella groups; she most recently sang with the Mount Holyoke College Milk & Cookies. On Catherine’s days off, she’s most likely looking at videos of cats, wishing she had a cat, or fleeing to her parents’ home on Long Island to pet their cats. Catherine wants to send some love to her boyfriend who encouraged her to fill her soul up and try out for Concrete!


Caitlin | Alto

Caitlin FINAL (website crop)

Caitlin is a New York City-based events professional and cheese aficionado. Originally from Tallahassee, FL, she graduated from Florida State University, where she majored in Music and sang with All Night Yahtzee, FSU’s premiere co-ed a cappella group. During her years in All Night Yahtzee, Caitlin served as the group’s choreographer and received “Best Choreography” awards at her 2007 ICCA Quarter and Semi-Finals, as well as the 2008 ICCA Finals, at which All Night Yahtzee placed second. Caitlin’s voice was featured on Voices Only 2009, singing Ben Folds’ “Missing the War” with All Night Yahtzee. Since graduating, she has served as music director of Boston’s The 508s, the founder and music director of Seattle’s Shot in the Dark, and as music director of Empire A Cappella. In addition to arranging for and performing with Concrete, she is a member of the Founder’s Board for the Contemporary A Cappella League.

Jason | Tenor

Jason FINAL (website crop)

Jason is an aspiring programmer with a huge heart and a soft spot for bubble wrap. Jason is Concrete’s tenor and has an illustrious singing history, most recently with The Stereotypes, the award-winning group from Washington University in St. Louis. When he’s not singing without instruments, Jason likes to watch reruns of ‘HIMYM’ and enter the Hamilton lottery because he is not throwing away his shot!

Lior | Bass

Lior FINAL (website crop)

Lior is a management consultant working on Hurricane Sandy reconstruction for the State of New York. Originally from St. Louis, MO, Lior sang bass in The Shabbatones, the University of Pennsylvania’s premier Jewish a cappella group. In addition to Concrete, he currently sings with Pella, Kol Haneshama, and Avir. In his severely limited free time outside of singing, Lior can be found throwing Frisbee, traveling, or taking candid photographs of his unappreciative friends.

Rizumik | VP


RIZUMIK is an artist mostly known for his rhythmic and improvisational skills. Born in Portugal and based in NYC, Rizumik connects to playing, acting, singing, dancing, and teaching, mostly through beatbox, percussion and singing. In 2016, he was part of the faculty of Bobby McFerrin’s Circlesongs course, at Omega Institute. He was the lead in the internationally acclaimed show The Voca People, having performed on Off-Broadway and around the world, for many years. The show won the 2012 Lucile Lortel Award for Outstanding Alternative Theatrical Experience. In 2014, he was also the principal actor in a Grand Marnier online campaign, in 2012 he became American Beatbox Champion, and in 2008, he was the winner of the music prize “Jovens Criadores”, in Portugal. He also participated in three Beatbox Battle World Championships, in Berlin. Throughout the years, Rizumik has been part of many different endeavors, and has participated and collaborated in many albums, events, and shows around the world. He mostly thrives in improvisation, humor, and movement.


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