From: Navya Amerineni Date: 2005-05-29T12:56:35+09:00 Subject: Thankyou caio Hi caio, thanks for your valuble suggestion and it works great.I have one another silly question this is the code class Song def initialize(name, artist, duration) @name=name @artist=artist @duration=duration end def myclass_function puts "this is my first class" end def to_s puts "Song: #@name--#@artist (#@duration)" end end class Karaokesong def initialize(name, artist, duration, lyrics) super(name, artist, duration) @lyrics=lyrics end def to_s puts "Song: #@name--#@artist (#@duration)" end end the following is the error "myfirstprojectfile:16:in `initialize': wrong number of arguments (3 for 0) (ArgumentError)" the error is with super. can you explain why it is. Regards, Navya. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com