Shiur from Rabbi Elimelech Kohn Ztl on לג בעומר, finishing the topic of ספירה. Discussed: 

The seemingly contradictory duality of Sefira; a joyful preparation for Kabalos Hatorah on Shavuos yet a time of mourning for the loss of Rabbi Akiva's students. Why is mourning even allowed during such a joyous time? Why do we celebrate that people stopped dying on Lag Baomer if the only reason there were no more deaths was that there was simply no one left alive? The connection between: 1) The Chasam Sofer regarding Lag B'omer being the day the first Maan fell. 2) The Kaf Hachaim pointing out that Rabbi Akiva began teaching his new students on that specific day. 3) The Orach  Shulchan showing that Reb Shimon Bar Yochai came out of the cave on that day.