f=8000;
F=349.23;
G=392;
Db=293.66;
C=523.25;
D=587.33;
T1=0:1/f:0.25;
T2=0:1/f:0.5;
gs1=sin(2*pi*C*T2);
gs2=sin(2*pi*C*T1);
gs3=sin(2*pi*D*T1);
gs4=sin(2*pi*G*T2);
gs5=0*T2;
gs6=sin(2*pi*F*T2);
gs7=sin(2*pi*F*T1);
gs8=sin(2*pi*Db*T1);
gs=[gs1,gs2,gs3,gs4,gs5,gs6,gs7,gs8,gs4,gs5];
sound(gs,8000);