Broberg was born and raised in Minneapolis. Interested by the upright piano in his family home that was a wedding gift to his parents from his maternal grandparents, he began playing piano at the age of 6.[6] At 9, he began studying piano with Dr. Joseph Zins at Crocus Hill Studios in Saint Paul, Minnesota.[7] He went on to study with Nancy Weems at the University of Houston's Moores School of Music, where he earned a Bachelor of Music degree in 2016.
Broberg was featured on NPR’s radio program for young musicians, From the Top, two times early in his career at the age of 16.[8][9] He has since been broadcast on other radio stations across the world including ABC in Australia and KUHF in Houston, Texas.[10]
In addition to many other wins at international piano competitions, Broberg won the fourth prize at the Sydney International Piano Competition in 2016; several of his performances from that competition were included on CDs released on the Universal Music Australia label.
On June 10, 2017, Broberg gained international attention by winning the silver medal at the prestigious Fifteenth Van Cliburn International Piano Competition.[14] Broberg had been invited to the live competition in Fort Worth, Texas, along with 29 other competitors from a pool of 290 applicants.[15] Broberg progressed through each of the four rounds which required two 45-minute solo recitals, one 60-minute solo recital, a piano quintet with the Brentano String Quartet, and a Mozartpiano concerto with the Fort Worth Symphony Orchestra and Nicholas McGegan, and he chose to end the final round by performing Rachmaninoff’s Rhapsody on a Theme of Paganini with the Fort Worth Symphony Orchestra and Leonard Slatkin. As a result of winning the silver medal, Broberg received $25,000 cash, three years of career management, a live recording, a recording partnership with Universal Music Group, press kits, videos, and a website.[16]
As part of his Competition prizes, Decca Gold released his debut solo album on August 18, 2017, Cliburn Silver 2017, featuring a selection of Broberg’s live performances during the competition.[17]