My son, after 6 years of cello, wants to try something new. So, starting Monday, he's switching from orchestra to band, so he can start playing electric bass guitar. He's excited, so I really want to be supportive. I'm looking for any advice that I can pass on to him, to help with the transition. He's using school equipment, to start. But I'm sure I'll need to make some purchases for him, by summer vacation. Thanks.