Tokyo to Nagoya (for ayu concert) advice??

[ayupan90]

Sorry if this is in the wrong place.

I plan on seeing ayu's concert in Nagoya because that's the only date during my stay in Japan. But I'll be staying in Tokyo so need to travel there for the day. The shinkansen looks like it's gonna cost around (or over depending on where I look) 7,000 yen each way. I can't really afford that. I've also looked at the JR travel pass thing for foreigners, but considering that I plan on spending most of my time in Tokyo, that's too much money. So is anyone else planning on doing the same or has done in the past that can give me some tips??

Any advice will be welcome