To get around the limit of seven nested IF functions in older Excel versions and to make your IF formula more compact and fast, consider using the following approaches instead of multiple IF statements. To test many conditions, use the LOOKUP, VLOOKUP, INDEX/MATCH or CHOOSE functions.
Landslide (Fleetwood Mac song) Landslide is a song written by Stevie Nicks and performed by British-American music group Fleetwood Mac. It was first featured on the band's 1975 eponymous album Fleetwood Mac. Along with Rhiannon, it would be Nicks' first original contribution to the band upon joining.
I wrote it (Landslide) for Lindsey - for him, about him. It's dear to both of us because it's about us. We're out there singing about our lives. ~Stevie Nicks Q Magazine, January 2004. It was written in 1973 at a point where Lindsey and I had driven to Aspen for him to rehearse for two weeks with Don Everly.