CREATE TABLE table_68091 ("Year" FLOAT, "Award" TEXT, "Category" TEXT, "Nominee" TEXT, "Result" TEXT)

Which Award has best performance by a leading actor in a musical
SELECT "Award" FROM table_68091 WHERE "Category" = 'best performance by a leading actor in a musical'
SELECT "Award" FROM "table_68091" WHERE "Category" = 'best performance by a leading actor in a musical'