Graham Russell knows a thing or two about planting a seed, nurturing it and watching it grow into a lush source of sustenance. Whether it’s literally growing the food he eats or producing a bumper crop of music for the world’s nourishment, he’s got a green thumb. Russell is guitarist, vocalist and songwriter for Air Supply, half of the iconic pop/rock duo, along with lead vocalist Russell Hitchcock. The band is headed to Houston for a live show May 1 at Arena Theatre, making Air Supply one of the first big name acts to perform for an actual, live-in-attendance audience here since COVID struck. The Houston date is one of the first on a tour which is slated to keep the group on the road through October.