1. Finding the couloir that I described from above is not easy if you want to descend without summiting Music Mountain. Hence my commitment rating of "considerable". I'd suggest dropping a GPS waypoint when exiting the couloir on the way up. Downclimbing the couloir on dry rock would entail some tricky moves at the bottom. The Mountain Project description of the N Ridge of Tejiras refers to two couloirs that can be used to access the Tejiras-Music Mountain ridge line; the only other possibility that I saw (midway between Tejiras and Music Mountain) looks like it might be doable as a snow climb, but the steepness and the rubble field at the top made it look pretty scary when dry.
2. The Lower Sand Creek Lake trail has a fair number of downed trees blocking it,. NPS has made a fair bit of progress in clearing the trail this summer, but there are still a good number of trees on the trail. I was told that it will be 2023 or later before the trees are completely removed.
3. The old user trail around Lower Sand Creek Lake is also blocked by lots of downed trees. On your way up, skirt around the trees at the northwestern side of the lake. IMPORTANT
: This route enters the Sangre De Cristo Wilderness
area. Wilderness areas have special regulations and restrictions for party size, dispersed camping, campfires, etc. Also, dog owners should read the wilderness information carefully because some wilderness areas prohibit dogs to be off-leash and/or limit how close dogs can be to lakes and streams. If you have questions about the wilderness area, please contact a U.S. Forest Service office for the National Forest(s) listed above.