I jam with 2 other musicians mostly in our houses but occasionally in public. Me on guitar plus one other guitar and a bass player. I do maybe half the singing. I do ok but my challenge is on the first line of a song coming in at the proper pitch for the song. If I start too high I can't reach the highest notes later on, and if I start too low it can sound awful too. With a guitar you can tune it and hit the proper notes and chords, but it seems like with this instrument (my voice) it's kind of a guess. Any tips?