"Wishing You Were Here" by Chicago.
This one was suggested by someone very dear to me but, at her request, she will remain anonymous: OK, girls and boys, back to the 70s: Composed by Peter Cetera, this wistful 1974 Chicago soft-rock ballad speaks of longing, absence and missing a loved one. The late great Terry Kath sings lead vocals and Cetera does the bridge. One of the very few Chicago tunes where Kath plays bass and Cetera guitar. The Beach Boys were recording in an adjacent studio so Carl and Dennis Wilson, as well as Al Jardine, added backup vocals. #11 Billboard Hot 100, #9 Cash Box, #1 Easy Listening. Song? Answer: "Wishing You Were Here" by Chicago. https://www.youtube.com/watch?v=Jj3TOw8DIDw&list=RDJj3TOw8DIDw&start_radio=1