The opening and closing shloka for Samskrta classes:
vāgarthāviva sampruktau vāgarthapratipattayejagataḥ pitarau vande pārvatīparameśvarau
Shloka by Ganapati Bhat
https://sadvidyafoundation.org/wp-content/uploads/2018/01/Stanza-by-Aarya.mp3
Shloka, Call and Response
https://sadvidyafoundation.org/wp-content/uploads/2018/01/Stanza-with-repetition.mp3