Original sentence: On 25 July 2009, the band shot two videos for upcoming singles in Los Angeles, and during the shoot Mike Lewis announced that Luke Johnson, formerly of Beat Union, had joined the band by posting a picture on Twitter
Edited sentence: On 25 July 2009, the band shot two videos for upcoming singles in Los Angeles, and during the shoot Mike Lewis announced that Luke Johnson, formerly of Beat Unionand Amen, had joined the band by posting a picture on Twitter