INT 1A - SND - PLAY MUSIC STRING IN BACKGROUND                                  
	AX = FF04h
	DS:DX -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. music string
Return: AH = status
	    00h successful (music begins playing in background)
	    01h busy
Note:	the music string accepted by SND is not the same as that accepted by
	  BASIC(Beginner's All-purpose Symbolic Instruction Code) A programming language originally designed as a means of teaching FORTRAN.  There are many variations of BASIC with differing capabilities; the majority are interpreted but compiled BASIC is becoming more popular.	All genuine IBMInternational Busiuness Machines personal computers (including the latest PS/2IBM PS/2, any model models) come equipped with a cassette-based BASIC interpreter in ROM. and other programs which process music strings
SeeAlso: AX=FF00h,AX=FF05h,INT 80/BX=0006h