Simplify the following text for a Grade 11 native English-speaking person.
Original: Soon after Sony BMG took them under contract , Hoffmann hired David Jost and Pat Benzner into the team of creators and authors , and had them give the teens instruction on songwriting and instrument playing ; most of the songs of the first album were written by Hoffmann , Jost and Benzer ( including the singles `` Scream '' and `` Rescue me '' which were completely written by them ) , only the single `` Unendlichkeit '' was written completely by Tokio Hotel themselves .
Simplified: Soon after Sony BMG took them under contract , Hoffmann hired David Jost and Pat Benzner into the team of creators and authors . They guided the teens on songwriting and instrument playing ; most of the songs of the first album were written by Hoffmann , Jost , Benzer , and Bill Kaulitz ( including the singles `` Scream '' and `` Rescue me '' which were completely written by them ) .