WhirlwindA whirlwind tour of 11 one-nighters has been scheduled by Andy Williams, who stars in his third NBC Television Network color special this season — “HAndrew Williams’ Kaleidoscope Company” — Sunday, April 28.Joining Andy on the tour will be the Osmond Brothers, whofrequently appear on Andy’s NBC - TV programs and who have just signed a contract wi h Andv’s new Barnabv Records label. Rounding out the troupeaccompanying Andy will be pianist Peter Nero and conductor Jack Elliott, who will direct a 32 piece orchestra.The concert schedule follows: April 25, Raleigh, N.C.; April 26. Greenville, S.C.; April 27, Baltimore, Md.; April 28, Charleston, West Va.; April 29, San Antonio, Tex.; April 30, Houston, Tex.; May 1, Fort Worth, Tex; May 2, Little Rock, Ark.; May 3, Memphis, Tenn.; May 4, St. Louis, Mo.; and May 5, Madison, W:s.