Switching from PC to IPAD

Hello guys! For the past 6 years I've been sequencing songs using Sonar 5 on my laptop and connected to my Yamaha PF500. But recently my laptop has been running sluggish lately (it's a 2003 Windows XP platform) and I was hoping I can switch over to the IPAD using Sonar or any similar sequencing program to play back my MIDI files using the Yamaha PF500.
 
Thanks in advance!