Simplify the following text for a Grade 10 native English-speaking person.
Original: After the `` 11 concerts , 11 cities '' tour , Adams continued to promote his album , this time on an acoustic tour touring with such musical acts as Foreigner and Rod Stewart .
Simplified: After the â 11 concerts , 11 citiesâ Adams went and acoustic tour where he toured with Foreigner and Rod Stewart to support his new album .