Like, when listening to FF, some songs have quite a few solos (or 'mini solos'

. I hear a few different guitar sounds, so i assume some songs have 2 of them doing solos at different times, even all three. It's quite spectacular. One of them, like on the last few albums, has a really 'blistering' sound with solos, and sounds kinda 'clean' and climactic, and reaches musical heights above the other gutiarists. It sounds whimsical. I'v always assumed this was Adrian Smith. And on the songs credited entirely to Steve Harris, does he write the guitar solos himself? Did he write all the solos on Where The Wild Wind Blows?
And did the band give any specific reasons why they kept all 3 guitarists in the band? personally, i love it. They're just unstoppable now.