Three of the four teenagers charged with gang-beating a 20-year-old musician outside South Station last month have been arraigned.

Two 16-year-olds were arraigned in Boston Juvenile Court Tuesday and released to their parents on the conditions that they stay away from the victim and South Station and observe a 7 p.m. to 7 a.m. curfew, according to the Suffolk District Attorney’s office.

The fourth juvenile, a 16-year-old from South Boston, is scheduled for arraignment on Aug. 2.

“This was a vicious, unprovoked attack on a young man who was doing nothing more than enjoying a pleasant summer evening in Boston with his girlfriend,” Suffolk District Attorney Kevin Hayden said in a statement. “Instead he ended up beaten and hospitalized after an outburst of teenage violence. I’m deeply grateful to the witness who provided evidence that helped police identify his attackers.”

All four are charged with assault and battery and larceny under $1,200 in connection with the June 23 assault.

Andy Neufell, the father of the local musician who was attacked, Adam Neufell, said that the four kids were in an SUV and began to yell derogatory and homophobic remarks at his son because he is in a rock band and has long hair. Adam Neufell and his girlfriend had missed their 11 p.m. train and were waiting to be picked up.

A police report stated that Adam Neufell and the teens “exchanged words” before the beating ensued.

Adam Neufell, 20, and his girlfriend, Celia Joseph, were attacked outside South Station in Boston.