The trial against Michael Dunn, a Brevard County man charged with shooting a 17-year-old in Jacksonville amid an argument over loud music, has drawn parallels to last year's trial against George Zimmerman, who was acquitted of murder for killing Trayvon Martin in Sanford.

Both Martin and Jordan Davis were 17-year-old, unarmed black teenagers, and State Attorney Angela Corey's office was prosecuting both cases.

But Zimmerman's former attorney, Mark O'Mara, said he didn't think his defense in the Zimmerman case would work in Dunn's.

"In Zimmerman, we had an ongoing argument and altercation," O'Mara explained. "We had physical evidence of a fight. We had an extended period of time of that fight. In the Dunn case, we have none of that."

Testimony in Dunn's trial continued Monday after getting underway last week in Jacksonville.

Saturday, attorneys questioned detectives and witnesses about the shooting, including an examination of the bullets allegedly fired from Dunn's gun.

Dunn's fiancee, Rhonda Rouer, took the stand as well to describe the events that led to the shooting.

Rouer said they pulled into the parking lot of the Jacksonville gas station, and she recalled Dunn being upset about the music coming from Davis' truck.

"I hate that thug music," Rouer recalled Dunn saying.

The jury wanted testimony to continue Sunday, but the judge in the case said attorneys needed time to regroup.

Dunn's attorney, Cory Strolla, said Dunn shot Jordan Davis in self-defense.

Information from CNN was used in this report.