Latin American musical duo Calle Sur performed at the 7th Street Underground Thursday as part of the University Board’s Human Potential program. Calle Sur, which means “South Street,” consists of Ed Past of Panama and Karin Stein of Colombia.

Stein and Past opened by talking about growing up in their native countries.

“He was riding buses while I was still riding horses,” Stein said and talked about the different cultures all over South America.

Calle Sur performed in front of a crowd of about 30 Eastern students and Charleston residents. Calle Sur sang every song in Spanish and used a large variety of Latin American instruments.

For a few songs, Stein played a small guitar from Venezuela called a quatro and also played an acoustic guitar. Past played percussion instruments like bongos, rattles and played an acoustic guitar.

Both members of Calle Sur played the panpipes for a number of songs. Stein described the panpipes as originating from Europe and consisting of two separate sections that can also be connected.

A woman in the audience asked Stein how she was able to play an entire song using the panpipe. Stein explained that she and Past do multiple breathing techniques to ensure the best sound when playing the panpipes.

Past used foot pedals to add to the percussions of each song. Stein told the audience that the sound of the foot pedal is easily heard, but hard to notice visually.

“Sometimes what you see is what you hear, but also sometimes what you don’t see is what you hear,” Stein said.

Calle Sur played original songs as well as covers of other South American bands, playing songs deriving from such countries as Costa Rica, Venezuela, Cuba and Brazil. Many of the songs are derived from the Alps.

Calle Sur concluded by thanking the audience.

“You are a small, but mighty crowd,” Past said, referring to the songs the crowd sang along with.

Andy Koch, a senior English major, said that he really enjoys that type of music and was happy that Eastern offered an event like this. Koch said that Calle Sur played “really beautiful music.”