They became popular with 1950s and 1960s style rock cover versions of modern hits such as "Umbrella" by Rihanna, "Crazy in Love" by Beyoncé, "Hot n Cold" by Katy Perry and "Call Me Maybe" by Carly Rae Jepsen.

[2] Their version of "Umbrella" was a hit in Germany, Spain, the Netherlands, Belgium, Finland, Iceland, Austria, Switzerland, Sweden and Norway.

[3][4][5][6][7] Their debut album, Strike!, was produced by JMC Music[8] and released in May 2009 in Germany, Switzerland and Austria,[9] in October 2009 in Finland,[10] in December 2009 in Sweden,[11] in February in Norway[12] and in March 2010 in The Netherlands.

[19] In 2010 the band supported guitarist Jeff Beck on his "Emotion and Commotion" tour as his opening act.

[citation needed] On 1 August 2011, the Baseballs released together with General Mills – the producer of the ice cream Häagen-Dazs – within an advertising campaign with Cosma Shiva Hagen a free download of the song "Wha Wha" – which was written especially for the campaign.