On June 12, 2021, Tim joined the pit for Constellation Theatre's streaming production of The Last Five Years.
In December 2020, Tim joined friends for a Baroque Christmas chamber recital--streaming from National City Christian Church in DC as part of their Music at Midday concert series.
Along with Dr. Lynn Trapp, Mary and Tim Thulson presented an October 4, 2020 program of duets and trios for the St. Joseph's concert series outside Baltimore.
Tim presented John Rutter's cello solo "Out of the Deep" on April 14, 2019, with the choir of the Lutheran Church of the Reformation, in Washington, DC.
In April 2019, Tim joined the Great Noise Ensemble's world premier of "Los Caprichos," by Armando Bayolo, including Buen Viaje for unaccompanied solo cello.
On April 7, 2019, Tim performed principal cello for the Ars Nova Chamber Orchestra's concert featuring Fauré’s Masques et bergamasques, the Haydn Clock Symphony, and the Britten/Holst "Rejoice in the Lamb."
Tim joined the string ensemble at St. John's Church, Lafayette Square, for their March 31 presentation of Maurice Duruflé's magnificent Requiem.
Tim joined the Great Noise Ensemble for their "Four Freedoms" project through 2018-19.
In December 2018, Tim performed as past of the string ensemble for the St. John's Church, Lafayette Square presentation of Charpentier's Messe de minuit pour Noël
Tim performed a series of 2018 small-ensemble "Baroque Christmas" recitals, including appearances in DC's beautiful Franciscan Monastery and the National City Christian Church.
On December 2, 2018, Tim provided cello continuo for the Mid-Atlantic Symphony presentation of Handel's Messiah
In December 2017, Tim joined the orchestra for Alfred St. Baptist Church's Kennedy Center Christmas concert.
In July 2017, Tim returned to the All Souls Episcopal summer music festival, joining the ensemble for a contemporary mass setting.
The Arlington Philharmonic's summer pops concert, in June 2017, featured Tim's solo cello work for Pirates of the Carribean: Dead Man's Chest.
June 3, 2017, Tim joined the Great Noise Ensemble for a program of contemporary works for chamber ensemble and voices, including Golijov's Ayre with mezzo-soprano Lena Seikaly.
Tim is a core member of the unconducted Ars Nova Chamber Orchestra. Highlights of the 2016-17 season included the Schubert Unfinished Symphony and Sibelius's Swan of Tuonela (with its dramatic cello solo), as well as chamber works by Martinů and Helsted.
Tim served as principal cello for the Pan American Symphony's February 2017 concert backing Jaimee Paul in DC's historic Lincoln Theater.
In December 2016, Tim joined the orchestra for Metropolitan Baptist's stunning presentation of the Handel Messiah.
December 6, 2016, Tim joined the orchestra for the Alfred St. Baptist Church Kennedy Center Christmas program.
On October 30, 2016, Tim served as principal cello for the Arlington Philharmonic in a concert featuring Elgar's Enigma Variations and the Vaughan Williams Fantasia on a Theme by Thomas Tallis.
In October 2016, the Great Noise Ensemble presented joint recitals with members of the US Army Orchestra Pershing's Own, featuring Steve Reich's Double Sextet.
Tim joined the cello section of the Mid-Atlantic Symphony for their fall 2016 presentation of Tchaikovsky's 4th symphony.
Tim served as principal cello for the American Studio Orchestra's July 2016 performance of Blood Moon, by Daniel Bowen--part of the Baltimore Artscape festival.
For the All Souls Episcopal sacred music festival, in early summer 2016, Tim joined a chamber ensemble to present a string of Mozart mass settings over the course of several weeks.
Tim performed solo Bach for the 2016 Good Friday service in DC's historic Immaculate Conception Church.
Tim joined the string quartet behind gospel stars Keith and Kristyn Getty for the Kennedy Center stop of their Christmas 2015 tour.
In November 2015, Tim joined the orchestra for Stevie Wonder's Charlottesville, VA show.
In June 2015, Tim presented a program of works for unaccompanied cello, including several selections from the iconic Bach Suites, for an afternoon tea at the historic Cosmos Club in Washington, DC.
In January of 2015, Tim led the string quintet of the Arlington Philharmonic for their annual "Arlington Strings Day" presentation to the 6th graders of Arlington County Public Schools. It's an interactive educational program that Tim has developed over the years along with the county strings teachers, featuring repertoire from a variety of genres and historical periods.
Tim appeared December 6, 2014 with the Great Noise Ensemble, performing contemporary works by Mark Sylvester, David Lang, and Marc Mellits.
In September of 2014, Tim developed and performed a house concert program for the Arlington Philharmonic, featuring a handful of Luigi Boccherini's lesser-known string quartets and discussing Boccherini's life and influences. Though he was a contemporary of Mozart and Haydn, Boccherini's quartet repertoire shows a broader variety of influences--partly because Boccherini spent much of his working life in the mountains near Madrid, away from the strict Viennese fashions of the day, writing for the court of the exiled Spanish Infante Don Luis.
On June 8, 2014, Tim had the honor of premiering Levan Iordanishvili's "Character" for solo cello as part of the Atlas Emerging Composers Forum in Washington, DC.