[7][8] She took up the violin and piano at three years old under the tutelage of Lilian Toews, and later Elizabeth Lupton, and learned improvisation through playing hymns with her mother, Mary Siemens.

She was a member of the Mennonite Children's Choir and under the direction of Helen Litz performed around the world with tours to Japan, China, South Korea, Hong Kong, Europe, The Middle East, and for President Jimmy Carter.

[11] After graduating W.C. Miller Collegiate, she attended the University of British Columbia where she completed her undergrad in violin performance under Andrew Dawes.

Siemens was a violinist for the Canadian Tenors featuring Joey Niceforo, Paul Ouellette, Leon Leontaridis, and Giovanni Amenta.

[16] The group released one album entitled Beginning Again and performed concerts at the Vancouver Winter Olympics, Children's Miracle Network at Walt Disney World and the Miss America pageant in Las Vegas.

[38] While at the Americana Music Association’s Gospel Brunch in September 2016, Siemens shared the stage with Grammy Award-winner Cece Winans during the event's closing jam.

[41] In March 2017, Siemens, along with her band The Sweet Sound Revival, embarked on their "Have a Little Faith" Canadian tour[42] that saw concerts in Brandon,[43] Gretna, Winnipeg, Saskatoon, Regina, Calgary, Kamloops, Penticton, West Vancouver, and Abbotsford.

[46] Later in 2018, Siemens and her bluegrass band performed at the Juno Awards Juno Fest in Vancouver (presented by CBC Music)[47] and were also featured performers for the Harvest For Kids event in Southern Manitoba – a charity event for Children's Camps International that set a Guinness World Record for the most combine harvesters working simultaneously in a single field.

[51] In December 2019, Siemens' "I'll Be Home For Christmas Tour" with her band The Sweet Sound Revival saw sold-out shows on their three Manitoba concerts in Winnipeg, Winkler, and Rosenort.

[4] Siemens's performance at the Sistine Chapel took place on February 19, 2014, for an event entitled Spiritual Elevation as part of the Fondazione Pro Musica e Arte Sacra where she was a guest soloist alongside vocalist Mary Zilba and harpist Mark Edward Spencer.

[58][59] Siemens and pianist Roy Tan performed at Santa Maria sopra Minerva[60] for the Fondazione Pro Musica e Arte Sacra, an event Courtial founded that's known as "the biggest sacred music festival in the world".

On November 20, 2020, Siemens and Tan performed again for Hans-Albert Courtial in a private reception at The Vatican held at Residenza San Paolo VI.

[39] In the fall of 2019, Siemens returned for a fourth time to perform at the Vatican with her husband Eli Bennett and their duo SaxAndViolin on November 9, 2019.

[61] Together, they performed for a private event called the Rome Summit that brought together Christian leaders from around the world, hosted in Vatican City.

In July, 2023, Siemens returned to Italy for an 8-day concert tour with the Continuo Arts Foundation Symphonic Chorus, directed by Candace Wicke.

On October 2, 2005, Siemens was a member of the orchestra that accompanied DJ Radar in a performance of hip hop and classical music for the premiere of a new composition called Concerto for Turntable, which had been commissioned for the Red Bull Artsehcro event.

[63][64] On November 30, 2009, Siemens was guest artist with her duo Diva Musica and concertmaster with the Continuo Arts Symphonic Chorus & Orchestra performing "A Carol Fantasy", composed by Stephen Edwards, conducted by Candace Wicke.

[56] On April 11, 2010, Siemens returned to Carnegie Hall as guest artist with Destino for a shared concert alongside narrator Tovah Feldshuh and The Continuo Arts Symphonic Youth Chorus & Choir conducted by Candace Wickie.

On March 9, 2014, Siemens was concertmaster with the Continuo Arts Symphonic Orchestra and The National Sacred Honor Choir, performing the Mozart Requiem and Beethoven's Choral Fantasy, conducted by Brandon Johnson.

In 2021, Siemens and her husband Eli Bennett recorded their own SaxAndViolin version of “God Save The Queen” featuring a 400-piece symphony orchestra and choir created by just the two of them.

[77][78] On April 27, 2016, after Siemens finished performing at an event entitled "Disruption 2016" for the Museum of Contemporary Art Santa Barbara[79] in Goleta, California, her violin was stolen.

[95] In September 2018, after performing 175 concerts in 100 cities[96] in the nine months of their secret pregnancy, the couple welcomed their first son, Theodore Parker Bennett into the world.