playing short tune via beep

[John Heim]

Here are some short tunes modelled after bird songs. I am not too happy with 
the robin alias. I think the sparrow (it's a White Throated Sparrow) is very 
good. Let me know what you think:

alias sparrow="beep -f 500 -l 300 -D 50 -n -f 600 -l 300 -d 50 -r 3"
alias robin="beep -f 400 -l 250 -D 1 -n -f 700 -l 200 -D 1 -n -f 300 -l 500"
alias cardinal="beep -f 750 -l 300 -D 40 -n -f 600 -l 400"