As Orthodox Christians, we sing and chant in in prayer, and in hope of adding beauty to the worship. Many thanks to the people who worked hard to put together the music and text available on these pages.
St. Anne Orthodox Church choir in Corvallis, OR sings the 8 Resurrectional Troparia and has graciously posted a YouTube playlist for those who are still becoming familiar with the Octoechos.
Ss. Peter and Paul Orthodox Church in Buffalo, NY breaks down the 4 part harmonies used Obikhod (common) Troparia, Kontakia, and Prokiemena: