This week, the Austin Symphony is performing Vårsång, a tone poem by Jean Sibelius which translates as “Spring Song.” My trumpet teacher once said, “Sibelius is some of the warmest cold music I know.” It’s a brilliant observation. Those who may be more familiar with Sibelius’ well known Finlandia, or his often-performed second symphony, will find this a wonderful breath of fresh air. And those of you who have never listened to Sibelius should give it a try. It’s a beautiful work.