Final answer:
The song traditionally requested at live venues is 'Free Bird' by Lynyrd Skynyrd, known for its iconic guitar solos and a cultural meme that crosses various genres of live performances.
Step-by-step explanation:
The song that has developed a long tradition of being loudly requested at live venues, regardless of the concert's genre, is 'Free Bird' by Lynyrd Skynyrd. This phenomenon began as a joke but has become a cultural meme, with audience members yelling 'Play Free Bird!' at various performances, not just at rock concerts but in many different settings. The call reflects a desire for the familiar and beloved guitar solos and live jam sessions that the song is known for. It has transcended its origins to become a universal shout-out in live music events.