With his 15th studio album arriving at the end of August, Goo Goo Dolls bassist Robby Takac says the hardest part of touring is locking in the set list.

“It’s been tough now for 10 years to make a set list because we know every night we’re leaving without playing songs people want to hear,” Takac says.

Takac says they — Takac and vocalist and guitarist John Rzeznik —have their dirty dozen, a list of songs like “Iris” and “Slide” that they can “play in their sleep.” But they spent a month rehearsing the other 12 songs on the set list before going on tour as they balance introducing fans to new music while hitting all the classics.

The Grammy-nominated duo will release their new, seven-track album at the end of the month, “Summer Anthem,” after hitting the stage at St. Louis Music Park on

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