Please answer the following questions down below without plagiarizing from other sources.

John is a recognized french horn player. John has played for several major symphonies. Last year John went through bankruptcy and in order to pay his rent for a couple of months took out loans from a small bank - Avarice Bank - and pledged his french horn as collateral. He was unable to make the first payment on the loan so the bank was getting ready to take the french horn for non-payment. John approached the director of the Gilroy Philharmonic International Symphony - Steve - for help - asking him to guarantee payment so he does not lose his french horn. Steve agreed to guarantee the payment - partially because John is scheduled as the featured performer at the Classic Polka Festival in Gilroy which Steve manages. Steve called Avarice Bank and said if John could not pay, he would, and Avarice accepted his by phone. John played for the Polka Festival (it was very successful), but immediately after, left town and his whereabouts are unknown. Avarice bank has contacted Steve and indicated they have not collected from John and they expect Steve to pay the debt. Steve told Avarice they did not have anything in writing from him (though there are witnesses who heard Joe guarantee payment) and he believes he will not be liable for John's debt. Avarice has indicated it will file suit for payment against Steve. Instructions: Answer the following questions about this case: 1. 2. 3. Issue: What is the legal topic/dispute? (Be specific. Don't just say Contract Law, and don't restate the case. I know what happened already.) Decision: Who should prevail? Support: Provide support for your decision. Describe what the law says about situations like this, and how it applies to this case.