You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Newcastle_upon_Tyne

Context:
Large-scale regeneration has replaced former shipping premises with imposing new office developments; an innovative tilting bridge, the Gateshead Millennium Bridge was commissioned by Gateshead Council and has integrated the older Newcastle Quayside more closely with major cultural developments in Gateshead, including the BALTIC Centre for Contemporary Art, the venue for the Turner Prize 2011 and the Norman Foster-designed The Sage Gateshead music centre. The Newcastle and Gateshead Quaysides are now a thriving, cosmopolitan area with bars, restaurants and public spaces. As a tourist promotion, Newcastle and Gateshead have linked together under the banner "NewcastleGateshead", to spearhead the regeneration of the North-East. The River Tyne had the temporary Bambuco Bridge in 2008 for ten days; it was not made for walking, road or cycling, but was just a sculpture.

Question:
Who designed the Sage Gateshead music center?

Norman Foster