Greetings, sir. I believe I could be of great assistance to you on your project. I am a professional singer, songwriter, guitarist and an audio engineer with more than 10 years of experience in these fields.
I would gladly do your birthday song present for your son. It would be an acoustic piece of music, upbeat and happy oriented, of course. I would need the details of your son, so I could implement all those things into lyrics.
It would be done in 3-4 days maximum, maybe faster.
If you're interested in this offer, feel free to contact me here for further discussion.
Best regards,
Bojan