Complex sentence: Willson penned a number of very well-known songs, such as "You and I", which was a No.1 for Glenn Miller in 1941 on Billboard and which was also recorded by Bing Crosby, and for Tommy Dorsey with Frank Sinatra on vocals.
Split into simpler sentences: Willson penned a number of very well-known songs, such as "You and I", which was a No.1 for Glenn Miller in 1941 on Billboard. It was also recorded by Bing Crosby, and by Tommy Dorsey with Frank Sinatra on vocals.