A jam session is when musicians get together and play whatever they like.

VOA: special.2010.06.21

The president appealed to lawmakers from both parties to work together on health care during his recent address to a joint session of Congress.

VOA: standard.2009.09.28

The New York meeting co-chaired by President Obama, British Prime Minister Gordon Brown and Pakistani President Asif Ali Zardari was the first summit-level session of the informal Friends of Democratic Pakistan grouping, and it brought together leaders of some 25 countries and organizations.

VOA: standard.2009.09.24

During our final session together, the service member announced he had enrolled in a treatment program that also addressed his PTSD.

WHITEHOUSE: A Military Family, Torn by Stress and Substance Abuse, Comes Together by Staying in FOCUS | The White House

It's a bit weird because half the squad is half-time and half of it full-time so we have to hang around until late afternoon to have a full training session together.

BBC: Ready to rumble with Thunder

In another session, together with Michael Berry from the University of Bristol, he experimented with the force of magnetism.

FORBES: Research by Mucking About