Sir Rod Stewart’s singing career spans decades, and his loyal fanbase hasn’t dwindled through the years. In a recent interview, the legendary musician talked about one of his most famous songs, and how it almost didn’t even make his first big album. The 79-year-old is associated with a number of classic hits, but his third album in 1971, Every Picture Tells a Story, was his breakthrough. It topped charts globally, as did the album’s classic ballad, Maggie May. However, the hit song almost didn’t even make the album. Stewart recently shared a clip on his Instagram account of a new interview wit…