ðə kəstˈɑːbi ʃˈoʊ hɐz ˈɔːlsoʊ fˈiːtʃɚd ɡˈɛst mjˈuːzɪkəl pɚfˈoːɹmənsᵻz baɪ ɔːɹnˈɛt kˈoʊlmən, ɡlˈɛn mˈætlɑːk, ˈʌŋkəl mˈʌŋk, ɹˈændi dʒˈoʊnz, dˈɛɹɪk stˈoːɹm, tˈoʊni mˈɪdəltən, ðə wˈɪloʊz, ðə ʃiː wˈʊlvz ænd ɡlˈɪnt.
The Kostabi Show has also featured guest musical performances by Ornette Coleman, Glen Matlock, Uncle Monk, Randy Jones, Derek Storm, Tony Middleton, The Willowz, The She Wolves and Glint.