为什么钢琴的第一个键是la但是音阶的第一个音是do
Tips:Do Not Provide
Personal Loans: Go Easy On Your Finances
Finance, Finance, Finance, Foreign Exchange, Stocks, Currency Circle, Venture Capital, Bitcoin, ICO...
为什么钢琴的第一个键是la但是音阶的第一个音是do
Tips:Do Not Provide
Personal Loans: Go Easy On Your Finances
Finance, Finance, Finance, Foreign Exchange, Stocks, Currency Circle, Venture Capital, Bitcoin, ICO...